Factors of 91...1

Numbers are given in compact notation 9(n) where n is the number of 1's that follow the digit 9.  For example, 9111111 would be written 9(6). All prime factors are listed.  Factors with the notation (probable prime) are not proven prime.  Numbers in square bracket preceeded by "Cn" are unresolved composite factors. Entries in red are not completely factored, or have factors not proven prime.

9 ( 1 ) = 7 * 13
9 ( 2 ) = Prime
9 ( 3 ) = 3 * 3037
9 ( 4 ) = 179 * 509
9 ( 5 ) = Prime
9 ( 6 ) = 3 * 223 * 13619
9 ( 7 ) = 7 * 13 * 1001221
9 ( 8 ) = 31 * 29390681
9 ( 9 ) = 3^2 * 67 * 941 * 16057
9 ( 10 ) = 23 * 3961352657
9 ( 11 ) = 1229 * 741343459
9 ( 12 ) = 3 * 9767 * 310948811
9 ( 13 ) = 7 * 13 * 17 * 577 * 587 * 173887
9 ( 14 ) = 19 * 47953216374269
9 ( 15 ) = 3 * 233 * 13034493721189
9 ( 16 ) = 543877 * 167521537243
9 ( 17 ) = 44942479 * 20272827209
9 ( 18 ) = 3^3 * 88365967 * 3818761579
9 ( 19 ) = 7 * 13 * 1001221001221001221
9 ( 20 ) = Prime
9 ( 21 ) = 3 * 9413 * 322642838312656649
9 ( 22 ) = 2046151 * 44528048570760961
9 ( 23 ) = 31 * 3643 * 8067713698485926267
9 ( 24 ) = 3 * 29 * 104725415070242656449553
9 ( 25 ) = 7 * 13 * 139 * 167 * 347 * 79063 * 1572157004797
9 ( 26 ) = 113 * 784463562937 * 10278272398831
9 ( 27 ) = 3^2 * 1012345679012345679012345679
9 ( 28 ) = 293 * 16312836276463 * 19062253695029
9 ( 29 ) = 17^2 * 610541 * 5163672222603546821539
9 ( 30 ) = 3 * 1171122637987 * 2593269857935023151
9 ( 31 ) = 7 * 13 * 59 * 695809 * 24388657632083020761791
9 ( 32 ) = 19^2 * 23 * 1657157 * 66217480046761575374741
9 ( 33 ) = 3 * 4603 * 143137 * 1738925362507 * 2650795721381
9 ( 34 ) = 1627 * 55999453663866693983473331967493
9 ( 35 ) = 97 * 383 * 12979 * 1436311 * 65627711 * 20045821498379
9 ( 36 ) = 3^2 * 1553 * 651864571160557423704021686421343
9 ( 37 ) = 7 * 13 * 47 * 593 * 4289 * 25609 * 2410441541 * 135685090823911
9 ( 38 ) = 31 * 16759 * 18092119 * 231463867 * 418782869185008683
9 ( 39 ) = 3 * 4896598261 * 620234063559219369872875310617
9 ( 40 ) = 659 * 14397358752478253 * 9602915378297085128593
9 ( 41 ) = Prime
9 ( 42 ) = 3 * 67 * 14198363 * 3192544872993653676664536395547997
9 ( 43 ) = 7 * 13 * 1109 * 1066913 * 13657670178679 * 61957341838484995447
9 ( 44 ) = 2273 * 400840787994329569340568020726401720682407
9 ( 45 ) = 3^3 * 17 * 157 * 4433877823 * 124958988221 * 228195871572054999059
9 ( 46 ) = 4349 * 31517 * 128903 * 5156725793587055777672440028812889
9 ( 47 ) = Prime
9 ( 48 ) = 3 * 3037037037037037037037037037037037037037037037037
9 ( 49 ) = 7 * 13 * 3409005980762537 * 293698810407204099773900311137533
9 ( 50 ) = 19 * 38791 * 303458985352877 * 4073678633027547155725970345767
9 ( 51 ) = 3 * 14933907400463 * 203365198109027979530163491070968562499
9 ( 52 ) = 29 * 1483 * 1557027431 * 1360617116863125241858784293553245849183
9 ( 53 ) = 31 * 359 * 2351519 * 1183914928787 * 29406694614866726192571567849403
9 ( 54 ) = 3^2 * 23 * 3109 * 14157294796486297551461334960386335310002456808597
9 ( 55 ) = 7^3 * 13 * 61 * 276919 * 286591 * 2400259 * 192624049255777 * 9128935069903812187
9 ( 56 ) = 134983361 * 300377019262578454061 * 22471103600802699300176396291
9 ( 57 ) = 3 * 2557 * 1318516541 * 900811201065821257392215579452992787555284101
9 ( 58 ) = 33053 * 4947853 * 557113485339960846455221681056264625436257644479
9 ( 59 ) = 257 * 5069261388053 * 95742722032387 * 7304454085414875908053572259193
9( 60 ) = 3 * 836057392325748183853 * 3632570042337158048866210470777642440129
9( 61 ) = 7 * 13 * 17 * 12647 * 14239971169 * 2621554954441242137 * 124745656987223463895284443
9 ( 62 ) = 4241 * 1298197 * 4876996198511 * 1387848466581523 * 24449388545746724548387031
9 ( 63 ) = 3 * 3 * 8970558497 * 67102060013 * 325134362391548237503 * 5172620620158489399413
9 ( 64 ) = 30074951 * 47807821 * 552858510800257 * 114618168676131802715299268763028613
9 ( 65 ) = 463 * 64651388091743 * 18241508428007659 * 1668598120053030737710946316603781
9 ( 66 ) = 3 * 13877 * 14779 * 303432959 * 6385438152850481 * 7642861608020337576109788653621141
9 ( 67 ) = 7 * 13 * 269 * 3463 * 19069 * 77042873 * 147335687 * 4965429706945146861468845713360984219397
9 ( 68 ) = 19 * 31 * 2657 * 9978681910645907 * 58343343649309667213353866249665194485137299601
9 ( 69 ) = 3 * 107713 * 890111 * 9619048981 * 3293105634451709869927621055129050605140346292039
9 ( 70 ) = 24855473 * 389243744779 * 3289313712701 * 263908570076563 * 10848479671682538161796691
9 ( 71 ) = 139 * 397 * 397 * 13297 * 2152343 * 70302027523907275088929 * 20670097627734625360780104971179
9 ( 72 ) = 3^5 * 50787696109 * 738255272052404781751133265382463295682624914899467393355953
9 ( 73 ) = 7 * 13 * 2594425733 * 4300388473 * 738544018008251149 * 121507933111695444847267604074478381
9 ( 74 ) = 3947 * 63291973 * 3647166435176627753144197813466367394939026689236593757692923281
9 ( 75 ) = 3 * 67 * 352292837651 * 96551547374562768922531 * 1332638124086083743773818582689992009831
9 ( 76 ) = 23^2 * 1490209264609313 * 12286453190777509 * 9406799370478943957876151410422288286382827
9 ( 77 ) = 17 * 193 * 90749145481 * 3060008044932863621845310631334997293913362715901908866493185951
9 ( 78 ) = 3 * 109 * 2503 * 52309861 * 5571297105119 * 96617936493181278028193 * 395334847561809835836125009813
9 ( 79 ) = 7 * 13 * 576568888603 * 786496650069059659 * 341687397681588144313 * 6461791012173148727550557221
9 ( 80 ) = 29 * 1097 * 28639584795873105683560529063939619372932798262066171411407635592717163144347
9 ( 81 ) = 3^2 * 1117239262571 * 3735194809581647 * 472036499088032201 * 513917972481738485891794546495805867
9 ( 82 ) = 5537404963973649893873 * 1802181063739500722798087 * 9129912917490922278929990379580238161
9 ( 83 ) = 31 * 47 * 379 * 18419791197459499 * 1955010095938057836635957 * 45818289702852668208869365880342483459
9 ( 84 ) = 3 * 106861 * 4432151 * 207133082671 * 1494502178597 * 440090849942216447173 * 47068238562598199969952656017
9 ( 85 ) = 7 * 13 * 13 * 193057 * 187812847 * [C 70 ]
9 ( 86 ) = 19 * 20773 * 1128521 * [C 76 ]
9 ( 87 ) = 3 * [C 88 ]
9 ( 88 ) = 548441 * [C 84 ]
9 ( 89 ) = 59 * [C 89 ]
9 ( 90 ) = 3 * 3 * 6047 * 2682751 * [C 80 ]
9 ( 91 ) = 7 * 13 * 5333 * (probable prime)
9 ( 92 ) = Prime
9 ( 93 ) = 3 * 17 * 1873 * 1581077 * [C 83 ]
9 ( 94 ) = [C 95 ]
9 ( 95 ) = 1931 * 198851 * [C 88 ]
9 ( 96 ) = 3 * 8370487 * 268835029 * (probable prime)
9 ( 97 ) = 7 * 7 * 13 * 11971 * [C 92 ]
9 ( 98 ) = 23 * 31 * (probable prime)
9 ( 99 ) = 3 * 3 * 3 * 881 * [C 96 ]
9 ( 100 ) = 2833 * (probable prime)
9 ( 101 ) = [C 102 ]
9 ( 102 ) = 3 * 227 * 103271851 * [C 93 ]
9 ( 103 ) = 7 * 13 * 7109 * [C 99 ]
...
9 ( 161 ) = (probable prime)
...
9 ( 401 ) = (probable prime)
...
9 ( 455 ) = (probable prime)