1901/1/1: 010101 = up-down mirror symmetric 1901/1/1: 010101 = cyclic permutation symmetric 1901/1/1: 010101 = 01:01:01 = each is up-down mirror symmetric 1901/1/1: 010101 = 010:101 = each is left-right mirror symmetric 1901/1/1: 010101 = 010:101 = each is 180 deg rotationally symmetric 1901/1/1: 010101 = 010:101 = each is palindrome 1901/1/1: 010101 = 010:101 = each is up-down mirror symmetric 1901/1/1: 01011 = up-down mirror symmetric 1901/1/1: 01101 = up-down mirror symmetric 1901/1/1: 0111 = up-down mirror symmetric 1901/1/1: 0111 = 01:11 = integer ratio of 1 to 11 1901/1/1: 0111 = 01:11 = each is up-down mirror symmetric 1901/1/1: 10101 = palindrome 1901/1/1: 10101 = left-right mirror symmetric 1901/1/1: 10101 = up-down mirror symmetric 1901/1/1: 10101 = 180 deg rotationally symmetric 1901/1/1: 1011 = up-down mirror symmetric 1901/1/1: 1011 = 10:11 = each is up-down mirror symmetric 1901/1/1: 1101 = up-down mirror symmetric 1901/1/1: 1101 = 11:01 = integer ratio of 11 to 1 1901/1/1: 1101 = 11:01 = each is up-down mirror symmetric 1901/1/1: 111 = single digit 1901/1/1: 111 = palindrome 1901/1/1: 111 = left-right mirror symmetric 1901/1/1: 111 = up-down mirror symmetric 1901/1/1: 111 = 180 deg rotationally symmetric 1901/1/1: 111 = cyclic permutation symmetric 1901/1/2: 0112 = 01:12 = integer ratio of 1 to 12 1901/1/2: 0121 = 01:21 = integer ratio of 1 to 21 1901/1/2: 020101 = 020:101 = each is palindrome 1901/1/2: 10201 = palindrome 1901/1/2: 1201 = 12:01 = integer ratio of 12 to 1 1901/1/2: 121 = palindrome 1901/1/2: 2101 = 21:01 = integer ratio of 21 to 1 1901/1/3: 0113 = 01:13 = integer ratio of 1 to 13 1901/1/3: 0131 = 01:31 = integer ratio of 1 to 31 1901/1/3: 030101 = 030:101 = each is palindrome 1901/1/3: 10301 = palindrome 1901/1/3: 1301 = 13:01 = integer ratio of 13 to 1 1901/1/3: 131 = palindrome 1901/1/3: 3101 = 31:01 = integer ratio of 31 to 1 1901/1/4: 0114 = 01:14 = integer ratio of 1 to 14 1901/1/4: 0141 = 01:41 = integer ratio of 1 to 41 1901/1/4: 040101 = 040:101 = each is palindrome 1901/1/4: 10401 = palindrome 1901/1/4: 1401 = 14:01 = integer ratio of 14 to 1 1901/1/4: 141 = palindrome 1901/1/4: 4101 = 41:01 = integer ratio of 41 to 1 1901/1/5: 0115 = 01:15 = integer ratio of 1 to 15 1901/1/5: 0151 = 01:51 = integer ratio of 1 to 51 1901/1/5: 050101 = 050:101 = each is palindrome 1901/1/5: 10501 = palindrome 1901/1/5: 1501 = 15:01 = integer ratio of 15 to 1 1901/1/5: 151 = palindrome 1901/1/5: 5101 = 51:01 = integer ratio of 51 to 1 1901/1/6: 0116 = 01:16 = integer ratio of 1 to 16 1901/1/6: 0161 = 01:61 = integer ratio of 1 to 61 1901/1/6: 060101 = 060:101 = each is palindrome 1901/1/6: 10601 = palindrome 1901/1/6: 1061901 = 180 deg rotationally symmetric 1901/1/6: 1601 = 16:01 = integer ratio of 16 to 1 1901/1/6: 161 = palindrome 1901/1/6: 6101 = 61:01 = integer ratio of 61 to 1 1901/1/7: 0117 = 01:17 = integer ratio of 1 to 17 1901/1/7: 0171 = 01:71 = integer ratio of 1 to 71 1901/1/7: 070101 = 070:101 = each is palindrome 1901/1/7: 10701 = palindrome 1901/1/7: 1701 = 17:01 = integer ratio of 17 to 1 1901/1/7: 171 = palindrome 1901/1/7: 7101 = 71:01 = integer ratio of 71 to 1 1901/1/8: 010108 = up-down mirror symmetric 1901/1/8: 010108 = 01:01:08 = each is up-down mirror symmetric 1901/1/8: 010108 = 010:108 = each is up-down mirror symmetric 1901/1/8: 01018 = up-down mirror symmetric 1901/1/8: 010801 = up-down mirror symmetric 1901/1/8: 010801 = 01:08:01 = each is up-down mirror symmetric 1901/1/8: 010801 = 010:801 = each is up-down mirror symmetric 1901/1/8: 01081 = up-down mirror symmetric 1901/1/8: 01108 = up-down mirror symmetric 1901/1/8: 0118 = up-down mirror symmetric 1901/1/8: 0118 = 01:18 = integer ratio of 1 to 18 1901/1/8: 0118 = 01:18 = each is up-down mirror symmetric 1901/1/8: 01801 = up-down mirror symmetric 1901/1/8: 0181 = up-down mirror symmetric 1901/1/8: 0181 = 01:81 = integer ratio of 1 to 81 1901/1/8: 0181 = 01:81 = each is up-down mirror symmetric 1901/1/8: 080101 = up-down mirror symmetric 1901/1/8: 080101 = 08:01:01 = each is up-down mirror symmetric 1901/1/8: 080101 = 080:101 = each is left-right mirror symmetric 1901/1/8: 080101 = 080:101 = each is palindrome 1901/1/8: 080101 = 080:101 = each is up-down mirror symmetric 1901/1/8: 08011 = up-down mirror symmetric 1901/1/8: 08101 = up-down mirror symmetric 1901/1/8: 0811 = up-down mirror symmetric 1901/1/8: 0811 = 08:11 = each is up-down mirror symmetric 1901/1/8: 10108 = up-down mirror symmetric 1901/1/8: 1018 = up-down mirror symmetric 1901/1/8: 1018 = 10:18 = each is up-down mirror symmetric 1901/1/8: 10801 = palindrome 1901/1/8: 10801 = left-right mirror symmetric 1901/1/8: 10801 = up-down mirror symmetric 1901/1/8: 1081 = up-down mirror symmetric 1901/1/8: 1081 = 10:81 = each is up-down mirror symmetric 1901/1/8: 1108 = up-down mirror symmetric 1901/1/8: 1108 = 11:08 = each is up-down mirror symmetric 1901/1/8: 118 = up-down mirror symmetric 1901/1/8: 1801 = up-down mirror symmetric 1901/1/8: 1801 = 18:01 = integer ratio of 18 to 1 1901/1/8: 1801 = 18:01 = each is up-down mirror symmetric 1901/1/8: 181 = palindrome 1901/1/8: 181 = left-right mirror symmetric 1901/1/8: 181 = up-down mirror symmetric 1901/1/8: 80101 = up-down mirror symmetric 1901/1/8: 8011 = up-down mirror symmetric 1901/1/8: 8011 = 80:11 = each is up-down mirror symmetric 1901/1/8: 8101 = up-down mirror symmetric 1901/1/8: 8101 = 81:01 = integer ratio of 81 to 1 1901/1/8: 8101 = 81:01 = each is up-down mirror symmetric 1901/1/8: 811 = up-down mirror symmetric 1901/1/9: 0119 = 01:19 = integer ratio of 1 to 19 1901/1/9: 0191 = 01:91 = integer ratio of 1 to 91 1901/1/9: 090101 = 090:101 = each is palindrome 1901/1/9: 10901 = palindrome 1901/1/9: 1091901 = palindrome 1901/1/9: 1901 = 19:01 = integer ratio of 19 to 1 1901/1/9: 191 = palindrome 1901/1/9: 9101 = 91:01 = integer ratio of 91 to 1 1901/1/10: 010110 = up-down mirror symmetric 1901/1/10: 010110 = 01:01:10 = each is up-down mirror symmetric 1901/1/10: 010110 = 010:110 = integer ratio of 1 to 11 1901/1/10: 010110 = 010:110 = each is up-down mirror symmetric 1901/1/10: 011001 = up-down mirror symmetric 1901/1/10: 011001 = 01:10:01 = each is up-down mirror symmetric 1901/1/10: 011001 = 011:001 = integer ratio of 11 to 1 1901/1/10: 011001 = 011:001 = each is up-down mirror symmetric 1901/1/10: 01101 = up-down mirror symmetric 1901/1/10: 01110 = palindrome 1901/1/10: 01110 = left-right mirror symmetric 1901/1/10: 01110 = up-down mirror symmetric 1901/1/10: 01110 = 180 deg rotationally symmetric 1901/1/10: 100101 = up-down mirror symmetric 1901/1/10: 100101 = 10:01:01 = each is up-down mirror symmetric 1901/1/10: 100101 = 100:101 = each is up-down mirror symmetric 1901/1/10: 10011 = up-down mirror symmetric 1901/1/10: 10101 = palindrome 1901/1/10: 10101 = left-right mirror symmetric 1901/1/10: 10101 = up-down mirror symmetric 1901/1/10: 10101 = 180 deg rotationally symmetric 1901/1/10: 1011 = up-down mirror symmetric 1901/1/10: 1011 = 10:11 = each is up-down mirror symmetric 1901/1/10: 10110 = up-down mirror symmetric 1901/1/10: 11001 = up-down mirror symmetric 1901/1/10: 1101 = up-down mirror symmetric 1901/1/10: 1101 = 11:01 = integer ratio of 11 to 1 1901/1/10: 1101 = 11:01 = each is up-down mirror symmetric 1901/1/10: 1110 = up-down mirror symmetric 1901/1/10: 1110 = 11:10 = each is up-down mirror symmetric 1901/1/11: 010111 = up-down mirror symmetric 1901/1/11: 010111 = 01:01:11 = each is up-down mirror symmetric 1901/1/11: 010111 = 010:111 = each is left-right mirror symmetric 1901/1/11: 010111 = 010:111 = each is 180 deg rotationally symmetric 1901/1/11: 010111 = 010:111 = each is palindrome 1901/1/11: 010111 = 010:111 = each is up-down mirror symmetric 1901/1/11: 011101 = up-down mirror symmetric 1901/1/11: 011101 = 01:11:01 = each is up-down mirror symmetric 1901/1/11: 011101 = 011:101 = each is up-down mirror symmetric 1901/1/11: 01111 = up-down mirror symmetric 1901/1/11: 10111 = up-down mirror symmetric 1901/1/11: 110101 = up-down mirror symmetric 1901/1/11: 110101 = 11:01:01 = each is up-down mirror symmetric 1901/1/11: 110101 = 110:101 = each is up-down mirror symmetric 1901/1/11: 11011 = palindrome 1901/1/11: 11011 = left-right mirror symmetric 1901/1/11: 11011 = up-down mirror symmetric 1901/1/11: 11011 = 180 deg rotationally symmetric 1901/1/11: 11101 = up-down mirror symmetric 1901/1/11: 1111 = single digit 1901/1/11: 1111 = palindrome 1901/1/11: 1111 = left-right mirror symmetric 1901/1/11: 1111 = up-down mirror symmetric 1901/1/11: 1111 = 180 deg rotationally symmetric 1901/1/11: 1111 = cyclic permutation symmetric 1901/1/11: 1111 = 11:11 = each is left-right mirror symmetric 1901/1/11: 1111 = 11:11 = each is single digit 1901/1/11: 1111 = 11:11 = each is 180 deg rotationally symmetric 1901/1/11: 1111 = 11:11 = each is palindrome 1901/1/11: 1111 = 11:11 = each is up-down mirror symmetric 1901/1/11: 1111 = 11:11 = each is cyclic permutation symmetric 1901/1/18: 010118 = up-down mirror symmetric 1901/1/18: 010118 = 01:01:18 = each is up-down mirror symmetric 1901/1/18: 010118 = 010:118 = each is up-down mirror symmetric 1901/1/18: 01118 = up-down mirror symmetric 1901/1/18: 011801 = up-down mirror symmetric 1901/1/18: 011801 = 01:18:01 = each is up-down mirror symmetric 1901/1/18: 011801 = 011:801 = each is up-down mirror symmetric 1901/1/18: 01181 = up-down mirror symmetric 1901/1/18: 10118 = up-down mirror symmetric 1901/1/18: 1118 = up-down mirror symmetric 1901/1/18: 1118 = 11:18 = each is up-down mirror symmetric 1901/1/18: 11801 = up-down mirror symmetric 1901/1/18: 1181 = up-down mirror symmetric 1901/1/18: 1181 = 11:81 = each is up-down mirror symmetric 1901/1/18: 180101 = up-down mirror symmetric 1901/1/18: 180101 = 18:01:01 = each is up-down mirror symmetric 1901/1/18: 180101 = 180:101 = each is up-down mirror symmetric 1901/1/18: 18011 = up-down mirror symmetric 1901/1/18: 18101 = up-down mirror symmetric 1901/1/18: 1811 = up-down mirror symmetric 1901/1/18: 1811 = 18:11 = each is up-down mirror symmetric 1901/1/19: 19011901 = cyclic permutation symmetric 1901/1/20: 010120 = 010:120 = integer ratio of 1 to 12 1901/1/20: 012001 = 012:001 = integer ratio of 12 to 1 1901/1/20: 1201 = 12:01 = integer ratio of 12 to 1 1901/1/21: 010121 = 010:121 = each is palindrome 1901/1/22: 1122 = 11:22 = integer ratio of 1 to 2 1901/1/22: 1122 = 11:22 = each is single digit 1901/1/22: 1122 = 11:22 = each is palindrome 1901/1/22: 1122 = 11:22 = each is cyclic permutation symmetric 1901/1/22: 1221 = palindrome 1901/1/22: 2211 = 22:11 = integer ratio of 2 to 1 1901/1/22: 2211 = 22:11 = each is single digit 1901/1/22: 2211 = 22:11 = each is palindrome 1901/1/22: 2211 = 22:11 = each is cyclic permutation symmetric 1901/1/30: 010130 = 010:130 = integer ratio of 1 to 13 1901/1/30: 013001 = 013:001 = integer ratio of 13 to 1 1901/1/30: 1301 = 13:01 = integer ratio of 13 to 1 1901/1/31: 010131 = 010:131 = each is palindrome 1901/2/1: 0121 = 01:21 = integer ratio of 1 to 21 1901/2/1: 020101 = 020:101 = each is palindrome 1901/2/1: 10201 = palindrome 1901/2/1: 1201 = 12:01 = integer ratio of 12 to 1 1901/2/1: 121 = palindrome 1901/2/1: 2101 = 21:01 = integer ratio of 21 to 1 1901/2/2: 010202 = 010:202 = each is palindrome 1901/2/2: 0122 = 01:22 = integer ratio of 1 to 22 1901/2/2: 1202 = 12:02 = integer ratio of 6 to 1 1901/2/2: 2201 = 22:01 = integer ratio of 22 to 1 1901/2/3: 010203 = 01:02:03 = arthimetic series of increment 1 1901/2/3: 0123 = 0:1:2:3 = arthimetic series of increment 1 1901/2/3: 0123 = 01:23 = integer ratio of 1 to 23 1901/2/3: 030201 = 03:02:01 = arthimetic series of increment -1 1901/2/3: 0321 = 03:21 = integer ratio of 1 to 7 1901/2/3: 1203 = 12:03 = integer ratio of 4 to 1 1901/2/3: 123 = 1:2:3 = arthimetic series of increment 1 1901/2/3: 2301 = 23:01 = integer ratio of 23 to 1 1901/2/3: 3201 = 32:01 = integer ratio of 32 to 1 1901/2/3: 321 = 3:2:1 = arthimetic series of increment -1 1901/2/4: 010204 = 01:02:04 = geometric series of ratio 2 1901/2/4: 0124 = 01:24 = integer ratio of 1 to 24 1901/2/4: 040201 = 04:02:01 = geometric series of ratio 0.5 1901/2/4: 1204 = 12:04 = integer ratio of 3 to 1 1901/2/4: 124 = 1:2:4 = geometric series of ratio 2 1901/2/4: 2401 = 24:01 = integer ratio of 24 to 1 1901/2/4: 4201 = 42:01 = integer ratio of 42 to 1 1901/2/4: 421 = 4:2:1 = geometric series of ratio 0.5 1901/2/5: 0125 = 01:25 = integer ratio of 1 to 25 1901/2/5: 2501 = 25:01 = integer ratio of 25 to 1 1901/2/5: 5201 = 52:01 = integer ratio of 52 to 1 1901/2/6: 0126 = 01:26 = integer ratio of 1 to 26 1901/2/6: 1206 = 12:06 = integer ratio of 2 to 1 1901/2/6: 2601 = 26:01 = integer ratio of 26 to 1 1901/2/6: 6201 = 62:01 = integer ratio of 62 to 1 1901/2/7: 0127 = 01:27 = integer ratio of 1 to 27 1901/2/7: 0721 = 07:21 = integer ratio of 1 to 3 1901/2/7: 2701 = 27:01 = integer ratio of 27 to 1 1901/2/7: 7201 = 72:01 = integer ratio of 72 to 1 1901/2/8: 0128 = 01:28 = integer ratio of 1 to 28 1901/2/8: 2801 = 28:01 = integer ratio of 28 to 1 1901/2/8: 8201 = 82:01 = integer ratio of 82 to 1 1901/2/9: 0129 = 01:29 = integer ratio of 1 to 29 1901/2/9: 2901 = 29:01 = integer ratio of 29 to 1 1901/2/9: 9201 = 92:01 = integer ratio of 92 to 1 1901/2/10: 010210 = 010:210 = integer ratio of 1 to 21 1901/2/10: 01210 = palindrome 1901/2/10: 021001 = 021:001 = integer ratio of 21 to 1 1901/2/10: 10201 = palindrome 1901/2/10: 2101 = 21:01 = integer ratio of 21 to 1 1901/2/12: 010212 = 010:212 = each is palindrome 1901/2/12: 12021 = palindrome 1901/2/12: 1212 = cyclic permutation symmetric 1901/2/12: 1221 = palindrome 1901/2/12: 2121 = cyclic permutation symmetric 1901/2/20: 010220 = 010:220 = integer ratio of 1 to 22 1901/2/20: 022001 = 022:001 = integer ratio of 22 to 1 1901/2/20: 2201 = 22:01 = integer ratio of 22 to 1 1901/2/21: 1221 = palindrome 1901/2/21: 2121 = cyclic permutation symmetric 1901/2/21: 2211 = 22:11 = integer ratio of 2 to 1 1901/2/21: 2211 = 22:11 = each is single digit 1901/2/21: 2211 = 22:11 = each is palindrome 1901/2/21: 2211 = 22:11 = each is cyclic permutation symmetric 1901/2/22: 010222 = 010:222 = each is palindrome 1901/2/24: 1224 = 12:24 = integer ratio of 1 to 2 1901/3/1: 0131 = 01:31 = integer ratio of 1 to 31 1901/3/1: 030101 = 030:101 = each is palindrome 1901/3/1: 10301 = palindrome 1901/3/1: 1301 = 13:01 = integer ratio of 13 to 1 1901/3/1: 131 = palindrome 1901/3/1: 3101 = 31:01 = integer ratio of 31 to 1 1901/3/2: 0132 = 01:32 = integer ratio of 1 to 32 1901/3/2: 030201 = 03:02:01 = arthimetic series of increment -1 1901/3/2: 0321 = 03:21 = integer ratio of 1 to 7 1901/3/2: 2301 = 23:01 = integer ratio of 23 to 1 1901/3/2: 3201 = 32:01 = integer ratio of 32 to 1 1901/3/2: 321 = 3:2:1 = arthimetic series of increment -1 1901/3/3: 010303 = 010:303 = each is palindrome 1901/3/3: 0133 = 01:33 = integer ratio of 1 to 33 1901/3/3: 3301 = 33:01 = integer ratio of 33 to 1 1901/3/4: 0134 = 01:34 = integer ratio of 1 to 34 1901/3/4: 3401 = 34:01 = integer ratio of 34 to 1 1901/3/4: 4301 = 43:01 = integer ratio of 43 to 1 1901/3/5: 010305 = 01:03:05 = arthimetic series of increment 2 1901/3/5: 0135 = 01:35 = integer ratio of 1 to 35 1901/3/5: 0351 = 03:51 = integer ratio of 1 to 17 1901/3/5: 050301 = 05:03:01 = arthimetic series of increment -2 1901/3/5: 135 = 1:3:5 = arthimetic series of increment 2 1901/3/5: 3501 = 35:01 = integer ratio of 35 to 1 1901/3/5: 5301 = 53:01 = integer ratio of 53 to 1 1901/3/5: 531 = 5:3:1 = arthimetic series of increment -2 1901/3/6: 0136 = 01:36 = integer ratio of 1 to 36 1901/3/6: 3601 = 36:01 = integer ratio of 36 to 1 1901/3/6: 6301 = 63:01 = integer ratio of 63 to 1 1901/3/7: 0137 = 01:37 = integer ratio of 1 to 37 1901/3/7: 3701 = 37:01 = integer ratio of 37 to 1 1901/3/7: 371901 = 37:19:01 = arthimetic series of increment -18 1901/3/7: 7301 = 73:01 = integer ratio of 73 to 1 1901/3/8: 0138 = 01:38 = integer ratio of 1 to 38 1901/3/8: 0381 = 03:81 = integer ratio of 1 to 27 1901/3/8: 3801 = 38:01 = integer ratio of 38 to 1 1901/3/8: 8301 = 83:01 = integer ratio of 83 to 1 1901/3/9: 010309 = 01:03:09 = geometric series of ratio 3 1901/3/9: 0139 = 01:39 = integer ratio of 1 to 39 1901/3/9: 090301 = 09:03:01 = geometric series of ratio 0.333333333333333 1901/3/9: 139 = 1:3:9 = geometric series of ratio 3 1901/3/9: 3901 = 39:01 = integer ratio of 39 to 1 1901/3/9: 9301 = 93:01 = integer ratio of 93 to 1 1901/3/9: 931 = 9:3:1 = geometric series of ratio 0.333333333333333 1901/3/10: 010310 = 010:310 = integer ratio of 1 to 31 1901/3/10: 01310 = palindrome 1901/3/10: 031001 = 031:001 = integer ratio of 31 to 1 1901/3/10: 10301 = palindrome 1901/3/10: 3101 = 31:01 = integer ratio of 31 to 1 1901/3/13: 010313 = 010:313 = each is palindrome 1901/3/13: 13031 = palindrome 1901/3/13: 1313 = cyclic permutation symmetric 1901/3/13: 1331 = palindrome 1901/3/13: 3131 = cyclic permutation symmetric 1901/3/20: 010320 = 010:320 = integer ratio of 1 to 32 1901/3/20: 032001 = 032:001 = integer ratio of 32 to 1 1901/3/20: 3201 = 32:01 = integer ratio of 32 to 1 1901/3/23: 010323 = 010:323 = each is palindrome 1901/3/26: 1326 = 13:26 = integer ratio of 1 to 2 1901/3/30: 010330 = 010:330 = integer ratio of 1 to 33 1901/3/30: 033001 = 033:001 = integer ratio of 33 to 1 1901/3/30: 3301 = 33:01 = integer ratio of 33 to 1 1901/3/31: 1331 = palindrome 1901/3/31: 3131 = cyclic permutation symmetric 1901/3/31: 3311 = 33:11 = integer ratio of 3 to 1 1901/3/31: 3311 = 33:11 = each is single digit 1901/3/31: 3311 = 33:11 = each is palindrome 1901/3/31: 3311 = 33:11 = each is cyclic permutation symmetric 1901/4/1: 0141 = 01:41 = integer ratio of 1 to 41 1901/4/1: 040101 = 040:101 = each is palindrome 1901/4/1: 10401 = palindrome 1901/4/1: 1401 = 14:01 = integer ratio of 14 to 1 1901/4/1: 141 = palindrome 1901/4/1: 4101 = 41:01 = integer ratio of 41 to 1 1901/4/2: 0142 = 01:42 = integer ratio of 1 to 42 1901/4/2: 040201 = 04:02:01 = geometric series of ratio 0.5 1901/4/2: 1402 = 14:02 = integer ratio of 7 to 1 1901/4/2: 2401 = 24:01 = integer ratio of 24 to 1 1901/4/2: 4201 = 42:01 = integer ratio of 42 to 1 1901/4/2: 421 = 4:2:1 = geometric series of ratio 0.5 1901/4/3: 0143 = 01:43 = integer ratio of 1 to 43 1901/4/3: 3401 = 34:01 = integer ratio of 34 to 1 1901/4/3: 4301 = 43:01 = integer ratio of 43 to 1 1901/4/4: 010404 = 010:404 = each is palindrome 1901/4/4: 0144 = 01:44 = integer ratio of 1 to 44 1901/4/4: 4401 = 44:01 = integer ratio of 44 to 1 1901/4/5: 0145 = 01:45 = integer ratio of 1 to 45 1901/4/5: 4501 = 45:01 = integer ratio of 45 to 1 1901/4/5: 5401 = 54:01 = integer ratio of 54 to 1 1901/4/6: 0146 = 01:46 = integer ratio of 1 to 46 1901/4/6: 4601 = 46:01 = integer ratio of 46 to 1 1901/4/6: 6401 = 64:01 = integer ratio of 64 to 1 1901/4/7: 010407 = 01:04:07 = arthimetic series of increment 3 1901/4/7: 0147 = 01:47 = integer ratio of 1 to 47 1901/4/7: 070401 = 07:04:01 = arthimetic series of increment -3 1901/4/7: 1407 = 14:07 = integer ratio of 2 to 1 1901/4/7: 147 = 1:4:7 = arthimetic series of increment 3 1901/4/7: 4701 = 47:01 = integer ratio of 47 to 1 1901/4/7: 7401 = 74:01 = integer ratio of 74 to 1 1901/4/7: 741 = 7:4:1 = arthimetic series of increment -3 1901/4/8: 0148 = 01:48 = integer ratio of 1 to 48 1901/4/8: 4801 = 48:01 = integer ratio of 48 to 1 1901/4/8: 8401 = 84:01 = integer ratio of 84 to 1 1901/4/9: 0149 = 01:49 = integer ratio of 1 to 49 1901/4/9: 4901 = 49:01 = integer ratio of 49 to 1 1901/4/9: 9401 = 94:01 = integer ratio of 94 to 1 1901/4/10: 010410 = 010:410 = integer ratio of 1 to 41 1901/4/10: 01410 = palindrome 1901/4/10: 041001 = 041:001 = integer ratio of 41 to 1 1901/4/10: 10401 = palindrome 1901/4/10: 4101 = 41:01 = integer ratio of 41 to 1 1901/4/14: 010414 = 010:414 = each is palindrome 1901/4/14: 14041 = palindrome 1901/4/14: 1414 = cyclic permutation symmetric 1901/4/14: 1441 = palindrome 1901/4/14: 4141 = cyclic permutation symmetric 1901/4/16: 010416 = 01:04:16 = geometric series of ratio 4 1901/4/16: 160401 = 16:04:01 = geometric series of ratio 0.25 1901/4/20: 010420 = 010:420 = integer ratio of 1 to 42 1901/4/20: 042001 = 042:001 = integer ratio of 42 to 1 1901/4/20: 4201 = 42:01 = integer ratio of 42 to 1 1901/4/22: 4221 = 42:21 = integer ratio of 2 to 1 1901/4/24: 010424 = 010:424 = each is palindrome 1901/4/28: 1428 = 14:28 = integer ratio of 1 to 2 1901/4/30: 010430 = 010:430 = integer ratio of 1 to 43 1901/4/30: 043001 = 043:001 = integer ratio of 43 to 1 1901/4/30: 4301 = 43:01 = integer ratio of 43 to 1 1901/5/1: 0151 = 01:51 = integer ratio of 1 to 51 1901/5/1: 050101 = 050:101 = each is palindrome 1901/5/1: 10501 = palindrome 1901/5/1: 1501 = 15:01 = integer ratio of 15 to 1 1901/5/1: 151 = palindrome 1901/5/1: 5101 = 51:01 = integer ratio of 51 to 1 1901/5/2: 0152 = 01:52 = integer ratio of 1 to 52 1901/5/2: 2501 = 25:01 = integer ratio of 25 to 1 1901/5/2: 5201 = 52:01 = integer ratio of 52 to 1 1901/5/3: 0153 = 01:53 = integer ratio of 1 to 53 1901/5/3: 0351 = 03:51 = integer ratio of 1 to 17 1901/5/3: 050301 = 05:03:01 = arthimetic series of increment -2 1901/5/3: 1503 = 15:03 = integer ratio of 5 to 1 1901/5/3: 3501 = 35:01 = integer ratio of 35 to 1 1901/5/3: 5301 = 53:01 = integer ratio of 53 to 1 1901/5/3: 531 = 5:3:1 = arthimetic series of increment -2 1901/5/4: 0154 = 01:54 = integer ratio of 1 to 54 1901/5/4: 4501 = 45:01 = integer ratio of 45 to 1 1901/5/4: 5401 = 54:01 = integer ratio of 54 to 1 1901/5/5: 010505 = 010:505 = each is palindrome 1901/5/5: 0155 = 01:55 = integer ratio of 1 to 55 1901/5/5: 1505 = 15:05 = integer ratio of 3 to 1 1901/5/5: 5501 = 55:01 = integer ratio of 55 to 1 1901/5/6: 0156 = 01:56 = integer ratio of 1 to 56 1901/5/6: 5601 = 56:01 = integer ratio of 56 to 1 1901/5/6: 6501 = 65:01 = integer ratio of 65 to 1 1901/5/7: 0157 = 01:57 = integer ratio of 1 to 57 1901/5/7: 5701 = 57:01 = integer ratio of 57 to 1 1901/5/7: 7501 = 75:01 = integer ratio of 75 to 1 1901/5/8: 0158 = 01:58 = integer ratio of 1 to 58 1901/5/8: 5801 = 58:01 = integer ratio of 58 to 1 1901/5/8: 8501 = 85:01 = integer ratio of 85 to 1 1901/5/9: 010509 = 01:05:09 = arthimetic series of increment 4 1901/5/9: 0159 = 01:59 = integer ratio of 1 to 59 1901/5/9: 090501 = 09:05:01 = arthimetic series of increment -4 1901/5/9: 159 = 1:5:9 = arthimetic series of increment 4 1901/5/9: 5901 = 59:01 = integer ratio of 59 to 1 1901/5/9: 9501 = 95:01 = integer ratio of 95 to 1 1901/5/9: 951 = 9:5:1 = arthimetic series of increment -4 1901/5/10: 010510 = 010:510 = integer ratio of 1 to 51 1901/5/10: 01510 = palindrome 1901/5/10: 051001 = 051:001 = integer ratio of 51 to 1 1901/5/10: 10501 = palindrome 1901/5/10: 5101 = 51:01 = integer ratio of 51 to 1 1901/5/15: 010515 = 010:515 = each is palindrome 1901/5/15: 15051 = palindrome 1901/5/15: 1515 = cyclic permutation symmetric 1901/5/15: 1551 = palindrome 1901/5/15: 5151 = cyclic permutation symmetric 1901/5/17: 1751 = 17:51 = integer ratio of 1 to 3 1901/5/20: 010520 = 010:520 = integer ratio of 1 to 52 1901/5/20: 052001 = 052:001 = integer ratio of 52 to 1 1901/5/20: 5201 = 52:01 = integer ratio of 52 to 1 1901/5/25: 010525 = 01:05:25 = geometric series of ratio 5 1901/5/25: 010525 = 010:525 = each is palindrome 1901/5/25: 250501 = 25:05:01 = geometric series of ratio 0.2 1901/5/30: 010530 = 010:530 = integer ratio of 1 to 53 1901/5/30: 053001 = 053:001 = integer ratio of 53 to 1 1901/5/30: 1530 = 15:30 = integer ratio of 1 to 2 1901/5/30: 5301 = 53:01 = integer ratio of 53 to 1 1901/6/1: 0161 = 01:61 = integer ratio of 1 to 61 1901/6/1: 060101 = 060:101 = each is palindrome 1901/6/1: 10601 = palindrome 1901/6/1: 1061901 = 180 deg rotationally symmetric 1901/6/1: 1601 = 16:01 = integer ratio of 16 to 1 1901/6/1: 161 = palindrome 1901/6/1: 1901061 = 180 deg rotationally symmetric 1901/6/1: 6101 = 61:01 = integer ratio of 61 to 1 1901/6/2: 0162 = 01:62 = integer ratio of 1 to 62 1901/6/2: 1602 = 16:02 = integer ratio of 8 to 1 1901/6/2: 2601 = 26:01 = integer ratio of 26 to 1 1901/6/2: 6201 = 62:01 = integer ratio of 62 to 1 1901/6/3: 0163 = 01:63 = integer ratio of 1 to 63 1901/6/3: 3601 = 36:01 = integer ratio of 36 to 1 1901/6/3: 6301 = 63:01 = integer ratio of 63 to 1 1901/6/4: 0164 = 01:64 = integer ratio of 1 to 64 1901/6/4: 1604 = 16:04 = integer ratio of 4 to 1 1901/6/4: 4601 = 46:01 = integer ratio of 46 to 1 1901/6/4: 6401 = 64:01 = integer ratio of 64 to 1 1901/6/5: 0165 = 01:65 = integer ratio of 1 to 65 1901/6/5: 5601 = 56:01 = integer ratio of 56 to 1 1901/6/5: 6501 = 65:01 = integer ratio of 65 to 1 1901/6/6: 010606 = 010:606 = each is palindrome 1901/6/6: 0166 = 01:66 = integer ratio of 1 to 66 1901/6/6: 6601 = 66:01 = integer ratio of 66 to 1 1901/6/7: 0167 = 01:67 = integer ratio of 1 to 67 1901/6/7: 6701 = 67:01 = integer ratio of 67 to 1 1901/6/7: 7601 = 76:01 = integer ratio of 76 to 1 1901/6/8: 0168 = 01:68 = integer ratio of 1 to 68 1901/6/8: 1608 = 16:08 = integer ratio of 2 to 1 1901/6/8: 6801 = 68:01 = integer ratio of 68 to 1 1901/6/8: 8601 = 86:01 = integer ratio of 86 to 1 1901/6/9: 010609 = 010:609 = each is 180 deg rotationally symmetric 1901/6/9: 0169 = 01:69 = integer ratio of 1 to 69 1901/6/9: 6901 = 69:01 = integer ratio of 69 to 1 1901/6/9: 9601 = 96:01 = integer ratio of 96 to 1 1901/6/10: 010610 = 010:610 = integer ratio of 1 to 61 1901/6/10: 01610 = palindrome 1901/6/10: 061001 = 061:001 = integer ratio of 61 to 1 1901/6/10: 10601 = palindrome 1901/6/10: 1061901 = 180 deg rotationally symmetric 1901/6/10: 6101 = 61:01 = integer ratio of 61 to 1 1901/6/11: 010611 = 01:06:11 = arthimetic series of increment 5 1901/6/11: 110601 = 11:06:01 = arthimetic series of increment -5 1901/6/16: 010616 = 010:616 = each is palindrome 1901/6/16: 16061 = palindrome 1901/6/16: 1616 = cyclic permutation symmetric 1901/6/16: 1661 = palindrome 1901/6/16: 6161 = cyclic permutation symmetric 1901/6/19: 010619 = 010:619 = each is 180 deg rotationally symmetric 1901/6/19: 19061 = 180 deg rotationally symmetric 1901/6/19: 1961 = 180 deg rotationally symmetric 1901/6/20: 010620 = 010:620 = integer ratio of 1 to 62 1901/6/20: 062001 = 062:001 = integer ratio of 62 to 1 1901/6/20: 6201 = 62:01 = integer ratio of 62 to 1 1901/6/23: 6231 = 62:31 = integer ratio of 2 to 1 1901/6/26: 010626 = 010:626 = each is palindrome 1901/6/30: 010630 = 010:630 = integer ratio of 1 to 63 1901/6/30: 063001 = 063:001 = integer ratio of 63 to 1 1901/6/30: 6301 = 63:01 = integer ratio of 63 to 1 1901/7/1: 0171 = 01:71 = integer ratio of 1 to 71 1901/7/1: 070101 = 070:101 = each is palindrome 1901/7/1: 10701 = palindrome 1901/7/1: 1701 = 17:01 = integer ratio of 17 to 1 1901/7/1: 171 = palindrome 1901/7/1: 7101 = 71:01 = integer ratio of 71 to 1 1901/7/2: 0172 = 01:72 = integer ratio of 1 to 72 1901/7/2: 0721 = 07:21 = integer ratio of 1 to 3 1901/7/2: 2701 = 27:01 = integer ratio of 27 to 1 1901/7/2: 7201 = 72:01 = integer ratio of 72 to 1 1901/7/3: 0173 = 01:73 = integer ratio of 1 to 73 1901/7/3: 3701 = 37:01 = integer ratio of 37 to 1 1901/7/3: 371901 = 37:19:01 = arthimetic series of increment -18 1901/7/3: 7301 = 73:01 = integer ratio of 73 to 1 1901/7/4: 0174 = 01:74 = integer ratio of 1 to 74 1901/7/4: 070401 = 07:04:01 = arthimetic series of increment -3 1901/7/4: 4701 = 47:01 = integer ratio of 47 to 1 1901/7/4: 7401 = 74:01 = integer ratio of 74 to 1 1901/7/4: 741 = 7:4:1 = arthimetic series of increment -3 1901/7/5: 0175 = 01:75 = integer ratio of 1 to 75 1901/7/5: 5701 = 57:01 = integer ratio of 57 to 1 1901/7/5: 7501 = 75:01 = integer ratio of 75 to 1 1901/7/6: 0176 = 01:76 = integer ratio of 1 to 76 1901/7/6: 6701 = 67:01 = integer ratio of 67 to 1 1901/7/6: 7601 = 76:01 = integer ratio of 76 to 1 1901/7/7: 010707 = 010:707 = each is palindrome 1901/7/7: 0177 = 01:77 = integer ratio of 1 to 77 1901/7/7: 7701 = 77:01 = integer ratio of 77 to 1 1901/7/8: 0178 = 01:78 = integer ratio of 1 to 78 1901/7/8: 7801 = 78:01 = integer ratio of 78 to 1 1901/7/8: 8701 = 87:01 = integer ratio of 87 to 1 1901/7/9: 0179 = 01:79 = integer ratio of 1 to 79 1901/7/9: 0791 = 07:91 = integer ratio of 1 to 13 1901/7/9: 7901 = 79:01 = integer ratio of 79 to 1 1901/7/9: 9701 = 97:01 = integer ratio of 97 to 1 1901/7/10: 010710 = 010:710 = integer ratio of 1 to 71 1901/7/10: 01710 = palindrome 1901/7/10: 071001 = 071:001 = integer ratio of 71 to 1 1901/7/10: 10701 = palindrome 1901/7/10: 7101 = 71:01 = integer ratio of 71 to 1 1901/7/13: 010713 = 01:07:13 = arthimetic series of increment 6 1901/7/13: 130701 = 13:07:01 = arthimetic series of increment -6 1901/7/17: 010717 = 010:717 = each is palindrome 1901/7/17: 17071 = palindrome 1901/7/17: 1717 = cyclic permutation symmetric 1901/7/17: 1771 = palindrome 1901/7/17: 7171 = cyclic permutation symmetric 1901/7/20: 010720 = 010:720 = integer ratio of 1 to 72 1901/7/20: 072001 = 072:001 = integer ratio of 72 to 1 1901/7/20: 7201 = 72:01 = integer ratio of 72 to 1 1901/7/27: 010727 = 010:727 = each is palindrome 1901/7/30: 010730 = 010:730 = integer ratio of 1 to 73 1901/7/30: 073001 = 073:001 = integer ratio of 73 to 1 1901/7/30: 7301 = 73:01 = integer ratio of 73 to 1 1901/8/1: 010801 = up-down mirror symmetric 1901/8/1: 010801 = 01:08:01 = each is up-down mirror symmetric 1901/8/1: 010801 = 010:801 = each is up-down mirror symmetric 1901/8/1: 01081 = up-down mirror symmetric 1901/8/1: 01801 = up-down mirror symmetric 1901/8/1: 0181 = up-down mirror symmetric 1901/8/1: 0181 = 01:81 = integer ratio of 1 to 81 1901/8/1: 0181 = 01:81 = each is up-down mirror symmetric 1901/8/1: 080101 = up-down mirror symmetric 1901/8/1: 080101 = 08:01:01 = each is up-down mirror symmetric 1901/8/1: 080101 = 080:101 = each is left-right mirror symmetric 1901/8/1: 080101 = 080:101 = each is palindrome 1901/8/1: 080101 = 080:101 = each is up-down mirror symmetric 1901/8/1: 08011 = up-down mirror symmetric 1901/8/1: 08101 = up-down mirror symmetric 1901/8/1: 0811 = up-down mirror symmetric 1901/8/1: 0811 = 08:11 = each is up-down mirror symmetric 1901/8/1: 10801 = palindrome 1901/8/1: 10801 = left-right mirror symmetric 1901/8/1: 10801 = up-down mirror symmetric 1901/8/1: 1081 = up-down mirror symmetric 1901/8/1: 1081 = 10:81 = each is up-down mirror symmetric 1901/8/1: 1801 = up-down mirror symmetric 1901/8/1: 1801 = 18:01 = integer ratio of 18 to 1 1901/8/1: 1801 = 18:01 = each is up-down mirror symmetric 1901/8/1: 181 = palindrome 1901/8/1: 181 = left-right mirror symmetric 1901/8/1: 181 = up-down mirror symmetric 1901/8/1: 80101 = up-down mirror symmetric 1901/8/1: 8011 = up-down mirror symmetric 1901/8/1: 8011 = 80:11 = each is up-down mirror symmetric 1901/8/1: 8101 = up-down mirror symmetric 1901/8/1: 8101 = 81:01 = integer ratio of 81 to 1 1901/8/1: 8101 = 81:01 = each is up-down mirror symmetric 1901/8/1: 811 = up-down mirror symmetric 1901/8/2: 0182 = 01:82 = integer ratio of 1 to 82 1901/8/2: 1802 = 18:02 = integer ratio of 9 to 1 1901/8/2: 2801 = 28:01 = integer ratio of 28 to 1 1901/8/2: 8201 = 82:01 = integer ratio of 82 to 1 1901/8/3: 0183 = 01:83 = integer ratio of 1 to 83 1901/8/3: 0381 = 03:81 = integer ratio of 1 to 27 1901/8/3: 1803 = 18:03 = integer ratio of 6 to 1 1901/8/3: 3801 = 38:01 = integer ratio of 38 to 1 1901/8/3: 8301 = 83:01 = integer ratio of 83 to 1 1901/8/4: 0184 = 01:84 = integer ratio of 1 to 84 1901/8/4: 4801 = 48:01 = integer ratio of 48 to 1 1901/8/4: 8401 = 84:01 = integer ratio of 84 to 1 1901/8/5: 0185 = 01:85 = integer ratio of 1 to 85 1901/8/5: 5801 = 58:01 = integer ratio of 58 to 1 1901/8/5: 8501 = 85:01 = integer ratio of 85 to 1 1901/8/6: 0186 = 01:86 = integer ratio of 1 to 86 1901/8/6: 1806 = 18:06 = integer ratio of 3 to 1 1901/8/6: 6801 = 68:01 = integer ratio of 68 to 1 1901/8/6: 8601 = 86:01 = integer ratio of 86 to 1 1901/8/7: 0187 = 01:87 = integer ratio of 1 to 87 1901/8/7: 7801 = 78:01 = integer ratio of 78 to 1 1901/8/7: 8701 = 87:01 = integer ratio of 87 to 1 1901/8/8: 010808 = up-down mirror symmetric 1901/8/8: 010808 = 01:08:08 = each is up-down mirror symmetric 1901/8/8: 010808 = 010:808 = each is left-right mirror symmetric 1901/8/8: 010808 = 010:808 = each is palindrome 1901/8/8: 010808 = 010:808 = each is up-down mirror symmetric 1901/8/8: 01088 = up-down mirror symmetric 1901/8/8: 01808 = up-down mirror symmetric 1901/8/8: 0188 = up-down mirror symmetric 1901/8/8: 0188 = 01:88 = integer ratio of 1 to 88 1901/8/8: 0188 = 01:88 = each is up-down mirror symmetric 1901/8/8: 080801 = up-down mirror symmetric 1901/8/8: 080801 = 08:08:01 = each is up-down mirror symmetric 1901/8/8: 080801 = 080:801 = each is up-down mirror symmetric 1901/8/8: 08081 = up-down mirror symmetric 1901/8/8: 08801 = up-down mirror symmetric 1901/8/8: 0881 = up-down mirror symmetric 1901/8/8: 0881 = 08:81 = each is up-down mirror symmetric 1901/8/8: 10808 = up-down mirror symmetric 1901/8/8: 1088 = up-down mirror symmetric 1901/8/8: 1088 = 10:88 = each is up-down mirror symmetric 1901/8/8: 1808 = up-down mirror symmetric 1901/8/8: 1808 = 18:08 = each is up-down mirror symmetric 1901/8/8: 188 = up-down mirror symmetric 1901/8/8: 80801 = up-down mirror symmetric 1901/8/8: 8081 = up-down mirror symmetric 1901/8/8: 8081 = 80:81 = each is up-down mirror symmetric 1901/8/8: 8801 = up-down mirror symmetric 1901/8/8: 8801 = 88:01 = integer ratio of 88 to 1 1901/8/8: 8801 = 88:01 = each is up-down mirror symmetric 1901/8/8: 881 = up-down mirror symmetric 1901/8/9: 0189 = 01:89 = integer ratio of 1 to 89 1901/8/9: 0981 = 09:81 = integer ratio of 1 to 9 1901/8/9: 1809 = 18:09 = integer ratio of 2 to 1 1901/8/9: 8901 = 89:01 = integer ratio of 89 to 1 1901/8/9: 9801 = 98:01 = integer ratio of 98 to 1 1901/8/10: 010810 = up-down mirror symmetric 1901/8/10: 010810 = 01:08:10 = each is up-down mirror symmetric 1901/8/10: 010810 = 010:810 = integer ratio of 1 to 81 1901/8/10: 010810 = 010:810 = each is up-down mirror symmetric 1901/8/10: 01810 = palindrome 1901/8/10: 01810 = left-right mirror symmetric 1901/8/10: 01810 = up-down mirror symmetric 1901/8/10: 081001 = up-down mirror symmetric 1901/8/10: 081001 = 08:10:01 = each is up-down mirror symmetric 1901/8/10: 081001 = 081:001 = integer ratio of 81 to 1 1901/8/10: 081001 = 081:001 = each is up-down mirror symmetric 1901/8/10: 08101 = up-down mirror symmetric 1901/8/10: 100801 = up-down mirror symmetric 1901/8/10: 100801 = 10:08:01 = each is up-down mirror symmetric 1901/8/10: 100801 = 100:801 = each is up-down mirror symmetric 1901/8/10: 10081 = up-down mirror symmetric 1901/8/10: 10801 = palindrome 1901/8/10: 10801 = left-right mirror symmetric 1901/8/10: 10801 = up-down mirror symmetric 1901/8/10: 1081 = up-down mirror symmetric 1901/8/10: 1081 = 10:81 = each is up-down mirror symmetric 1901/8/10: 10810 = up-down mirror symmetric 1901/8/10: 1810 = up-down mirror symmetric 1901/8/10: 1810 = 18:10 = each is up-down mirror symmetric 1901/8/10: 81001 = up-down mirror symmetric 1901/8/10: 8101 = up-down mirror symmetric 1901/8/10: 8101 = 81:01 = integer ratio of 81 to 1 1901/8/10: 8101 = 81:01 = each is up-down mirror symmetric 1901/8/11: 010811 = up-down mirror symmetric 1901/8/11: 010811 = 01:08:11 = each is up-down mirror symmetric 1901/8/11: 010811 = 010:811 = each is up-down mirror symmetric 1901/8/11: 01811 = up-down mirror symmetric 1901/8/11: 081101 = up-down mirror symmetric 1901/8/11: 081101 = 08:11:01 = each is up-down mirror symmetric 1901/8/11: 081101 = 081:101 = each is up-down mirror symmetric 1901/8/11: 08111 = up-down mirror symmetric 1901/8/11: 10811 = up-down mirror symmetric 1901/8/11: 110801 = up-down mirror symmetric 1901/8/11: 110801 = 11:08:01 = each is up-down mirror symmetric 1901/8/11: 110801 = 110:801 = each is up-down mirror symmetric 1901/8/11: 11081 = up-down mirror symmetric 1901/8/11: 11801 = up-down mirror symmetric 1901/8/11: 1181 = up-down mirror symmetric 1901/8/11: 1181 = 11:81 = each is up-down mirror symmetric 1901/8/11: 1811 = up-down mirror symmetric 1901/8/11: 1811 = 18:11 = each is up-down mirror symmetric 1901/8/11: 81101 = up-down mirror symmetric 1901/8/11: 8111 = up-down mirror symmetric 1901/8/11: 8111 = 81:11 = each is up-down mirror symmetric 1901/8/15: 010815 = 01:08:15 = arthimetic series of increment 7 1901/8/15: 150801 = 15:08:01 = arthimetic series of increment -7 1901/8/18: 010818 = up-down mirror symmetric 1901/8/18: 010818 = 01:08:18 = each is up-down mirror symmetric 1901/8/18: 010818 = 010:818 = each is left-right mirror symmetric 1901/8/18: 010818 = 010:818 = each is palindrome 1901/8/18: 010818 = 010:818 = each is up-down mirror symmetric 1901/8/18: 01818 = up-down mirror symmetric 1901/8/18: 081801 = up-down mirror symmetric 1901/8/18: 081801 = 08:18:01 = each is up-down mirror symmetric 1901/8/18: 081801 = 081:801 = each is up-down mirror symmetric 1901/8/18: 08181 = up-down mirror symmetric 1901/8/18: 10818 = up-down mirror symmetric 1901/8/18: 180801 = up-down mirror symmetric 1901/8/18: 180801 = 18:08:01 = each is up-down mirror symmetric 1901/8/18: 180801 = 180:801 = each is up-down mirror symmetric 1901/8/18: 18081 = palindrome 1901/8/18: 18081 = left-right mirror symmetric 1901/8/18: 18081 = up-down mirror symmetric 1901/8/18: 1818 = up-down mirror symmetric 1901/8/18: 1818 = cyclic permutation symmetric 1901/8/18: 1818 = 18:18 = each is up-down mirror symmetric 1901/8/18: 18801 = up-down mirror symmetric 1901/8/18: 1881 = palindrome 1901/8/18: 1881 = left-right mirror symmetric 1901/8/18: 1881 = up-down mirror symmetric 1901/8/18: 1881 = 18:81 = each is up-down mirror symmetric 1901/8/18: 81801 = up-down mirror symmetric 1901/8/18: 8181 = up-down mirror symmetric 1901/8/18: 8181 = cyclic permutation symmetric 1901/8/18: 8181 = 81:81 = each is up-down mirror symmetric 1901/8/20: 010820 = 010:820 = integer ratio of 1 to 82 1901/8/20: 082001 = 082:001 = integer ratio of 82 to 1 1901/8/20: 8201 = 82:01 = integer ratio of 82 to 1 1901/8/24: 8241 = 82:41 = integer ratio of 2 to 1 1901/8/27: 2781 = 27:81 = integer ratio of 1 to 3 1901/8/28: 010828 = 010:828 = each is palindrome 1901/8/30: 010830 = 010:830 = integer ratio of 1 to 83 1901/8/30: 083001 = 083:001 = integer ratio of 83 to 1 1901/8/30: 8301 = 83:01 = integer ratio of 83 to 1 1901/9/1: 0191 = 01:91 = integer ratio of 1 to 91 1901/9/1: 090101 = 090:101 = each is palindrome 1901/9/1: 10901 = palindrome 1901/9/1: 1091901 = palindrome 1901/9/1: 1901 = 19:01 = integer ratio of 19 to 1 1901/9/1: 1901091 = palindrome 1901/9/1: 191 = palindrome 1901/9/1: 9101 = 91:01 = integer ratio of 91 to 1 1901/9/2: 0192 = 01:92 = integer ratio of 1 to 92 1901/9/2: 2901 = 29:01 = integer ratio of 29 to 1 1901/9/2: 9201 = 92:01 = integer ratio of 92 to 1 1901/9/3: 0193 = 01:93 = integer ratio of 1 to 93 1901/9/3: 090301 = 09:03:01 = geometric series of ratio 0.333333333333333 1901/9/3: 3901 = 39:01 = integer ratio of 39 to 1 1901/9/3: 9301 = 93:01 = integer ratio of 93 to 1 1901/9/3: 931 = 9:3:1 = geometric series of ratio 0.333333333333333 1901/9/4: 0194 = 01:94 = integer ratio of 1 to 94 1901/9/4: 4901 = 49:01 = integer ratio of 49 to 1 1901/9/4: 9401 = 94:01 = integer ratio of 94 to 1 1901/9/5: 0195 = 01:95 = integer ratio of 1 to 95 1901/9/5: 090501 = 09:05:01 = arthimetic series of increment -4 1901/9/5: 5901 = 59:01 = integer ratio of 59 to 1 1901/9/5: 9501 = 95:01 = integer ratio of 95 to 1 1901/9/5: 951 = 9:5:1 = arthimetic series of increment -4 1901/9/6: 010906 = 010:906 = each is 180 deg rotationally symmetric 1901/9/6: 0196 = 01:96 = integer ratio of 1 to 96 1901/9/6: 6901 = 69:01 = integer ratio of 69 to 1 1901/9/6: 9601 = 96:01 = integer ratio of 96 to 1 1901/9/7: 0197 = 01:97 = integer ratio of 1 to 97 1901/9/7: 0791 = 07:91 = integer ratio of 1 to 13 1901/9/7: 7901 = 79:01 = integer ratio of 79 to 1 1901/9/7: 9701 = 97:01 = integer ratio of 97 to 1 1901/9/8: 0198 = 01:98 = integer ratio of 1 to 98 1901/9/8: 0981 = 09:81 = integer ratio of 1 to 9 1901/9/8: 8901 = 89:01 = integer ratio of 89 to 1 1901/9/8: 9801 = 98:01 = integer ratio of 98 to 1 1901/9/9: 010909 = 010:909 = each is palindrome 1901/9/9: 0199 = 01:99 = integer ratio of 1 to 99 1901/9/9: 9901 = 99:01 = integer ratio of 99 to 1 1901/9/10: 010910 = 010:910 = integer ratio of 1 to 91 1901/9/10: 01910 = palindrome 1901/9/10: 091001 = 091:001 = integer ratio of 91 to 1 1901/9/10: 10901 = palindrome 1901/9/10: 1091901 = palindrome 1901/9/10: 9101 = 91:01 = integer ratio of 91 to 1 1901/9/13: 1391 = 13:91 = integer ratio of 1 to 7 1901/9/16: 010916 = 010:916 = each is 180 deg rotationally symmetric 1901/9/16: 16091 = 180 deg rotationally symmetric 1901/9/16: 1691 = 180 deg rotationally symmetric 1901/9/17: 010917 = 01:09:17 = arthimetic series of increment 8 1901/9/17: 170901 = 17:09:01 = arthimetic series of increment -8 1901/9/19: 010919 = 010:919 = each is palindrome 1901/9/19: 19091 = palindrome 1901/9/19: 1919 = cyclic permutation symmetric 1901/9/19: 1991 = palindrome 1901/9/19: 9191 = cyclic permutation symmetric 1901/9/20: 010920 = 010:920 = integer ratio of 1 to 92 1901/9/20: 092001 = 092:001 = integer ratio of 92 to 1 1901/9/20: 9201 = 92:01 = integer ratio of 92 to 1 1901/9/29: 010929 = 010:929 = each is palindrome 1901/9/30: 010930 = 010:930 = integer ratio of 1 to 93 1901/9/30: 093001 = 093:001 = integer ratio of 93 to 1 1901/9/30: 9301 = 93:01 = integer ratio of 93 to 1 1901/10/1: 011001 = up-down mirror symmetric 1901/10/1: 011001 = 01:10:01 = each is up-down mirror symmetric 1901/10/1: 011001 = 011:001 = integer ratio of 11 to 1 1901/10/1: 011001 = 011:001 = each is up-down mirror symmetric 1901/10/1: 01101 = up-down mirror symmetric 1901/10/1: 100101 = up-down mirror symmetric 1901/10/1: 100101 = 10:01:01 = each is up-down mirror symmetric 1901/10/1: 100101 = 100:101 = each is up-down mirror symmetric 1901/10/1: 10011 = up-down mirror symmetric 1901/10/1: 10101 = palindrome 1901/10/1: 10101 = left-right mirror symmetric 1901/10/1: 10101 = up-down mirror symmetric 1901/10/1: 10101 = 180 deg rotationally symmetric 1901/10/1: 1011 = up-down mirror symmetric 1901/10/1: 1011 = 10:11 = each is up-down mirror symmetric 1901/10/1: 11001 = up-down mirror symmetric 1901/10/1: 1101 = up-down mirror symmetric 1901/10/1: 1101 = 11:01 = integer ratio of 11 to 1 1901/10/1: 1101 = 11:01 = each is up-down mirror symmetric 1901/10/2: 021001 = 021:001 = integer ratio of 21 to 1 1901/10/2: 10201 = palindrome 1901/10/2: 2101 = 21:01 = integer ratio of 21 to 1 1901/10/3: 031001 = 031:001 = integer ratio of 31 to 1 1901/10/3: 10301 = palindrome 1901/10/3: 3101 = 31:01 = integer ratio of 31 to 1 1901/10/4: 041001 = 041:001 = integer ratio of 41 to 1 1901/10/4: 10401 = palindrome 1901/10/4: 4101 = 41:01 = integer ratio of 41 to 1 1901/10/5: 051001 = 051:001 = integer ratio of 51 to 1 1901/10/5: 10501 = palindrome 1901/10/5: 5101 = 51:01 = integer ratio of 51 to 1 1901/10/6: 061001 = 061:001 = integer ratio of 61 to 1 1901/10/6: 10601 = palindrome 1901/10/6: 1061901 = 180 deg rotationally symmetric 1901/10/6: 6101 = 61:01 = integer ratio of 61 to 1 1901/10/7: 071001 = 071:001 = integer ratio of 71 to 1 1901/10/7: 10701 = palindrome 1901/10/7: 7101 = 71:01 = integer ratio of 71 to 1 1901/10/8: 011008 = up-down mirror symmetric 1901/10/8: 011008 = 01:10:08 = each is up-down mirror symmetric 1901/10/8: 011008 = 011:008 = each is up-down mirror symmetric 1901/10/8: 01108 = up-down mirror symmetric 1901/10/8: 081001 = up-down mirror symmetric 1901/10/8: 081001 = 08:10:01 = each is up-down mirror symmetric 1901/10/8: 081001 = 081:001 = integer ratio of 81 to 1 1901/10/8: 081001 = 081:001 = each is up-down mirror symmetric 1901/10/8: 08101 = up-down mirror symmetric 1901/10/8: 100801 = up-down mirror symmetric 1901/10/8: 100801 = 10:08:01 = each is up-down mirror symmetric 1901/10/8: 100801 = 100:801 = each is up-down mirror symmetric 1901/10/8: 10081 = up-down mirror symmetric 1901/10/8: 10801 = palindrome 1901/10/8: 10801 = left-right mirror symmetric 1901/10/8: 10801 = up-down mirror symmetric 1901/10/8: 1081 = up-down mirror symmetric 1901/10/8: 1081 = 10:81 = each is up-down mirror symmetric 1901/10/8: 11008 = up-down mirror symmetric 1901/10/8: 1108 = up-down mirror symmetric 1901/10/8: 1108 = 11:08 = each is up-down mirror symmetric 1901/10/8: 81001 = up-down mirror symmetric 1901/10/8: 8101 = up-down mirror symmetric 1901/10/8: 8101 = 81:01 = integer ratio of 81 to 1 1901/10/8: 8101 = 81:01 = each is up-down mirror symmetric 1901/10/9: 091001 = 091:001 = integer ratio of 91 to 1 1901/10/9: 10901 = palindrome 1901/10/9: 1091901 = palindrome 1901/10/9: 9101 = 91:01 = integer ratio of 91 to 1 1901/10/10: 011010 = up-down mirror symmetric 1901/10/10: 011010 = 01:10:10 = each is up-down mirror symmetric 1901/10/10: 011010 = 011:010 = each is up-down mirror symmetric 1901/10/10: 101001 = up-down mirror symmetric 1901/10/10: 101001 = 10:10:01 = each is up-down mirror symmetric 1901/10/10: 101001 = 101:001 = integer ratio of 101 to 1 1901/10/10: 101001 = 101:001 = each is up-down mirror symmetric 1901/10/10: 10101 = palindrome 1901/10/10: 10101 = left-right mirror symmetric 1901/10/10: 10101 = up-down mirror symmetric 1901/10/10: 10101 = 180 deg rotationally symmetric 1901/10/10: 11010 = up-down mirror symmetric 1901/10/11: 011011 = up-down mirror symmetric 1901/10/11: 011011 = cyclic permutation symmetric 1901/10/11: 011011 = 01:10:11 = each is up-down mirror symmetric 1901/10/11: 011011 = 011:011 = each is up-down mirror symmetric 1901/10/11: 101101 = palindrome 1901/10/11: 101101 = left-right mirror symmetric 1901/10/11: 101101 = up-down mirror symmetric 1901/10/11: 101101 = 180 deg rotationally symmetric 1901/10/11: 101101 = cyclic permutation symmetric 1901/10/11: 101101 = 10:11:01 = each is up-down mirror symmetric 1901/10/11: 101101 = 101:101 = each is left-right mirror symmetric 1901/10/11: 101101 = 101:101 = each is 180 deg rotationally symmetric 1901/10/11: 101101 = 101:101 = each is palindrome 1901/10/11: 101101 = 101:101 = each is up-down mirror symmetric 1901/10/11: 10111 = up-down mirror symmetric 1901/10/11: 11011 = palindrome 1901/10/11: 11011 = left-right mirror symmetric 1901/10/11: 11011 = up-down mirror symmetric 1901/10/11: 11011 = 180 deg rotationally symmetric 1901/10/11: 111001 = up-down mirror symmetric 1901/10/11: 111001 = 11:10:01 = each is up-down mirror symmetric 1901/10/11: 111001 = 111:001 = integer ratio of 111 to 1 1901/10/11: 111001 = 111:001 = each is up-down mirror symmetric 1901/10/11: 11101 = up-down mirror symmetric 1901/10/12: 121001 = 121:001 = integer ratio of 121 to 1 1901/10/13: 131001 = 131:001 = integer ratio of 131 to 1 1901/10/14: 141001 = 141:001 = integer ratio of 141 to 1 1901/10/15: 151001 = 151:001 = integer ratio of 151 to 1 1901/10/16: 161001 = 161:001 = integer ratio of 161 to 1 1901/10/17: 171001 = 171:001 = integer ratio of 171 to 1 1901/10/18: 011018 = up-down mirror symmetric 1901/10/18: 011018 = 01:10:18 = each is up-down mirror symmetric 1901/10/18: 011018 = 011:018 = each is up-down mirror symmetric 1901/10/18: 101801 = up-down mirror symmetric 1901/10/18: 101801 = 10:18:01 = each is up-down mirror symmetric 1901/10/18: 101801 = 101:801 = each is up-down mirror symmetric 1901/10/18: 10181 = up-down mirror symmetric 1901/10/18: 11018 = up-down mirror symmetric 1901/10/18: 181001 = up-down mirror symmetric 1901/10/18: 181001 = 18:10:01 = each is up-down mirror symmetric 1901/10/18: 181001 = 181:001 = integer ratio of 181 to 1 1901/10/18: 181001 = 181:001 = each is up-down mirror symmetric 1901/10/18: 18101 = up-down mirror symmetric 1901/10/19: 011019 = 01:10:19 = arthimetic series of increment 9 1901/10/19: 191001 = 19:10:01 = arthimetic series of increment -9 1901/10/19: 191001 = 191:001 = integer ratio of 191 to 1 1901/10/20: 102001 = 102:001 = integer ratio of 102 to 1 1901/10/20: 10201 = palindrome 1901/10/20: 201001 = 201:001 = integer ratio of 201 to 1 1901/10/21: 211001 = 211:001 = integer ratio of 211 to 1 1901/10/22: 011022 = 011:022 = integer ratio of 1 to 2 1901/10/22: 102201 = palindrome 1901/10/22: 221001 = 221:001 = integer ratio of 221 to 1 1901/10/23: 231001 = 231:001 = integer ratio of 231 to 1 1901/10/24: 241001 = 241:001 = integer ratio of 241 to 1 1901/10/25: 251001 = 251:001 = integer ratio of 251 to 1 1901/10/26: 261001 = 261:001 = integer ratio of 261 to 1 1901/10/27: 271001 = 271:001 = integer ratio of 271 to 1 1901/10/28: 281001 = 281:001 = integer ratio of 281 to 1 1901/10/29: 291001 = 291:001 = integer ratio of 291 to 1 1901/10/30: 103001 = 103:001 = integer ratio of 103 to 1 1901/10/30: 10301 = palindrome 1901/10/30: 301001 = 301:001 = integer ratio of 301 to 1 1901/10/31: 311001 = 311:001 = integer ratio of 311 to 1 1901/11/1: 011101 = up-down mirror symmetric 1901/11/1: 011101 = 01:11:01 = each is up-down mirror symmetric 1901/11/1: 011101 = 011:101 = each is up-down mirror symmetric 1901/11/1: 01111 = up-down mirror symmetric 1901/11/1: 110101 = up-down mirror symmetric 1901/11/1: 110101 = 11:01:01 = each is up-down mirror symmetric 1901/11/1: 110101 = 110:101 = each is up-down mirror symmetric 1901/11/1: 11011 = palindrome 1901/11/1: 11011 = left-right mirror symmetric 1901/11/1: 11011 = up-down mirror symmetric 1901/11/1: 11011 = 180 deg rotationally symmetric 1901/11/1: 11101 = up-down mirror symmetric 1901/11/1: 1111 = single digit 1901/11/1: 1111 = palindrome 1901/11/1: 1111 = left-right mirror symmetric 1901/11/1: 1111 = up-down mirror symmetric 1901/11/1: 1111 = 180 deg rotationally symmetric 1901/11/1: 1111 = cyclic permutation symmetric 1901/11/1: 1111 = 11:11 = each is left-right mirror symmetric 1901/11/1: 1111 = 11:11 = each is single digit 1901/11/1: 1111 = 11:11 = each is 180 deg rotationally symmetric 1901/11/1: 1111 = 11:11 = each is palindrome 1901/11/1: 1111 = 11:11 = each is up-down mirror symmetric 1901/11/1: 1111 = 11:11 = each is cyclic permutation symmetric 1901/11/6: 110601 = 11:06:01 = arthimetic series of increment -5 1901/11/8: 011108 = up-down mirror symmetric 1901/11/8: 011108 = 01:11:08 = each is up-down mirror symmetric 1901/11/8: 011108 = 011:108 = each is up-down mirror symmetric 1901/11/8: 01118 = up-down mirror symmetric 1901/11/8: 081101 = up-down mirror symmetric 1901/11/8: 081101 = 08:11:01 = each is up-down mirror symmetric 1901/11/8: 081101 = 081:101 = each is up-down mirror symmetric 1901/11/8: 08111 = up-down mirror symmetric 1901/11/8: 110801 = up-down mirror symmetric 1901/11/8: 110801 = 11:08:01 = each is up-down mirror symmetric 1901/11/8: 110801 = 110:801 = each is up-down mirror symmetric 1901/11/8: 11081 = up-down mirror symmetric 1901/11/8: 11108 = up-down mirror symmetric 1901/11/8: 1118 = up-down mirror symmetric 1901/11/8: 1118 = 11:18 = each is up-down mirror symmetric 1901/11/8: 11801 = up-down mirror symmetric 1901/11/8: 1181 = up-down mirror symmetric 1901/11/8: 1181 = 11:81 = each is up-down mirror symmetric 1901/11/8: 81101 = up-down mirror symmetric 1901/11/8: 8111 = up-down mirror symmetric 1901/11/8: 8111 = 81:11 = each is up-down mirror symmetric 1901/11/10: 011110 = palindrome 1901/11/10: 011110 = left-right mirror symmetric 1901/11/10: 011110 = up-down mirror symmetric 1901/11/10: 011110 = 180 deg rotationally symmetric 1901/11/10: 011110 = 01:11:10 = each is up-down mirror symmetric 1901/11/10: 011110 = 011:110 = integer ratio of 1 to 10 1901/11/10: 011110 = 011:110 = each is up-down mirror symmetric 1901/11/10: 101101 = palindrome 1901/11/10: 101101 = left-right mirror symmetric 1901/11/10: 101101 = up-down mirror symmetric 1901/11/10: 101101 = 180 deg rotationally symmetric 1901/11/10: 101101 = cyclic permutation symmetric 1901/11/10: 101101 = 10:11:01 = each is up-down mirror symmetric 1901/11/10: 101101 = 101:101 = each is left-right mirror symmetric 1901/11/10: 101101 = 101:101 = each is 180 deg rotationally symmetric 1901/11/10: 101101 = 101:101 = each is palindrome 1901/11/10: 101101 = 101:101 = each is up-down mirror symmetric 1901/11/10: 10111 = up-down mirror symmetric 1901/11/10: 111001 = up-down mirror symmetric 1901/11/10: 111001 = 11:10:01 = each is up-down mirror symmetric 1901/11/10: 111001 = 111:001 = integer ratio of 111 to 1 1901/11/10: 111001 = 111:001 = each is up-down mirror symmetric 1901/11/10: 11101 = up-down mirror symmetric 1901/11/10: 11110 = up-down mirror symmetric 1901/11/11: 011111 = up-down mirror symmetric 1901/11/11: 011111 = 01:11:11 = each is up-down mirror symmetric 1901/11/11: 011111 = 011:111 = each is up-down mirror symmetric 1901/11/11: 111101 = up-down mirror symmetric 1901/11/11: 111101 = 11:11:01 = each is up-down mirror symmetric 1901/11/11: 111101 = 111:101 = each is left-right mirror symmetric 1901/11/11: 111101 = 111:101 = each is 180 deg rotationally symmetric 1901/11/11: 111101 = 111:101 = each is palindrome 1901/11/11: 111101 = 111:101 = each is up-down mirror symmetric 1901/11/11: 11111 = single digit 1901/11/11: 11111 = palindrome 1901/11/11: 11111 = left-right mirror symmetric 1901/11/11: 11111 = up-down mirror symmetric 1901/11/11: 11111 = 180 deg rotationally symmetric 1901/11/11: 11111 = cyclic permutation symmetric 1901/11/12: 121101 = 121:101 = each is palindrome 1901/11/13: 131101 = 131:101 = each is palindrome 1901/11/14: 141101 = 141:101 = each is palindrome 1901/11/15: 151101 = 151:101 = each is palindrome 1901/11/16: 161101 = 161:101 = each is palindrome 1901/11/17: 171101 = 171:101 = each is palindrome 1901/11/18: 011118 = up-down mirror symmetric 1901/11/18: 011118 = 01:11:18 = each is up-down mirror symmetric 1901/11/18: 011118 = 011:118 = each is up-down mirror symmetric 1901/11/18: 11118 = up-down mirror symmetric 1901/11/18: 111801 = up-down mirror symmetric 1901/11/18: 111801 = 11:18:01 = each is up-down mirror symmetric 1901/11/18: 111801 = 111:801 = each is up-down mirror symmetric 1901/11/18: 11181 = up-down mirror symmetric 1901/11/18: 181101 = up-down mirror symmetric 1901/11/18: 181101 = 18:11:01 = each is up-down mirror symmetric 1901/11/18: 181101 = 181:101 = each is left-right mirror symmetric 1901/11/18: 181101 = 181:101 = each is palindrome 1901/11/18: 181101 = 181:101 = each is up-down mirror symmetric 1901/11/18: 18111 = up-down mirror symmetric 1901/11/19: 191101 = 191:101 = each is palindrome 1901/11/20: 112001 = 112:001 = integer ratio of 112 to 1 1901/11/21: 011121 = 01:11:21 = arthimetic series of increment 10 1901/11/21: 011121 = 011:121 = integer ratio of 1 to 11 1901/11/21: 11211 = palindrome 1901/11/21: 211101 = 21:11:01 = arthimetic series of increment -10 1901/11/30: 113001 = 113:001 = integer ratio of 113 to 1 1901/12/2: 1122 = 11:22 = integer ratio of 1 to 2 1901/12/2: 1122 = 11:22 = each is single digit 1901/12/2: 1122 = 11:22 = each is palindrome 1901/12/2: 1122 = 11:22 = each is cyclic permutation symmetric 1901/12/2: 12021 = palindrome 1901/12/2: 1221 = palindrome 1901/12/2: 2121 = cyclic permutation symmetric 1901/12/9: 011209 = 011:209 = integer ratio of 1 to 19 1901/12/10: 121001 = 121:001 = integer ratio of 121 to 1 1901/12/11: 11211 = palindrome 1901/12/11: 121101 = 121:101 = each is palindrome 1901/12/12: 12121 = palindrome 1901/12/20: 011220 = 011:220 = integer ratio of 1 to 20 1901/12/20: 122001 = 122:001 = integer ratio of 122 to 1 1901/12/20: 201201 = cyclic permutation symmetric 1901/12/22: 12221 = palindrome 1901/12/23: 011223 = 01:12:23 = arthimetic series of increment 11 1901/12/23: 231201 = 23:12:01 = arthimetic series of increment -11 1901/12/30: 123001 = 123:001 = integer ratio of 123 to 1 1901/12/31: 011231 = 011:231 = integer ratio of 1 to 21