Numbers are given in compact notation 8(n) where n is the number of 1's that follow the digit 8. For example, 8111111 would be written 8(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.
8 ( 1 ) = 3^4
8 ( 2 ) = Prime
8 ( 3 ) = Prime
8 ( 4 ) = 3 * 19 * 1423
8 ( 5 ) = 7 * 115873
8 ( 6 ) = 23 * 71 * 4967
8 ( 7 ) = 3 * 27037037
8 ( 8 ) = 283 * 2866117
8 ( 9 ) = 17 * 2239 * 213097
8 ( 10 ) = 3^2 * 89 * 7949 * 12739
8 ( 11 ) = 7 * 29 * 233 * 1187 * 14447
8 ( 12 ) = 257 * 31560743623
8 ( 13 ) = 3 * 47 * 227 * 911 * 2781743
8 ( 14 ) = 67 * 12106135986733
8 ( 15 ) = 1879 * 16411 * 263038019
8 ( 16 ) = 3 * 27037037037037037
8 ( 17 ) = 7 * 115873015873015873
8 ( 18 ) = 16183 * 21979151 * 22803967
8 ( 19 ) = 3^2 * 220403 * 40890304029493
8 ( 20 ) = 1443139 * 562046421800749
8 ( 21 ) = 1783 * 4549136910325917617
8 ( 22 ) = 3 * 19 * 40357 * 35260350108227539
8 ( 23 ) = 7^2 * 2609 * 174423511 * 36375181361
8 ( 24 ) = 14159 * 6222482177 * 92062784777
8 ( 25 ) = 3 * 17 * 617 * 2577656310137957578133
8 ( 26 ) = Prime
8 ( 27 ) = 5119 * 6166782239 * 256942892136871
8 ( 28 ) = 3^3 * 23 * 109 * 5657 * 211824443359015372807
8 ( 29 ) = 7 * 3917 * 8354419 * 3540890416598808551
8 ( 30 ) = 787 * 14723 * 15671 * 44669654727725979641
8 ( 31 ) = 3 * 103 * 363056763520069 * 723015053262991
8 ( 32 ) = 389 * 1006424211911 * 2071808798798143309
8 ( 33 ) = 31111013 * 260715107898000978338799547
8 ( 34 ) = 3 * 127 * 162283460909 * 1311840739760399591359
8 ( 35 ) = 7 * 115873015873015873015873015873015873
8 ( 36 ) = 86699390969 * 93554418554235266615568319
8 ( 37 ) = 3^2 * 9012345679012345679012345679012345679
8 ( 38 ) = 210901 * 3845932978559187064599556716711211
8 ( 39 ) = 29 * 131 * 2135064783130063466994238249831827089
8 ( 40 ) = 3 * 19 * 6119317 * 2114669675479103 * 109966399547422973
8 ( 41 ) = 7 * 17 * 71 * 203657 * 1988523917 * 237052685509455945437131
8 ( 42 ) = 419 * 25903 * 60876912585497 * 12276191185848220027259
8 ( 43 ) = 3 * 125509 * 215419109681672525771355337362555968393
8 ( 44 ) = 61 * 258282213554533508443 * 51482071792103442967657
8 ( 45 ) = 304489 * 1632473 * 9241261 * 15152964062381 * 116528969623343
8 ( 46 ) = 3^2 * 38794577 * 232309419922592420043975364881858247327
8 ( 47 ) = 7 * 59 * 67 * 7268585683 * 4032789763012031105182591819876427
8 ( 48 ) = 619 * 305947 * 502441 * 85242942228918253574075778613878647
8 ( 49 ) = 3 * 6827 * 14757689 * 1065904321 * 23199112588931 *
10852286331300629
8 ( 50 ) = 23 * 5077580477 * 6945374995597886107047422888152937330341
8 ( 51 ) = 1069 * 7587568859785885043134809271385510861656792433219
8 ( 52 ) = 3 * 2477231 * 10914217138828408427408278451640980206140257827
8 ( 53 ) = 7 * 3146072518418290871 * 36831006022477769034987178984421063
8 ( 54 ) = 89 * 311 * 523 * 3199387 * 862625167 * 931437041594041 *
217964547778609847
8 ( 55 ) = 3 * 3 * 3 * 32345253304157254931321 *
92876540433564547288591226812333
8 ( 56 ) = 81971 * 1585484583581 * 66905363824253 *
93281851418368728491057237
8 ( 57 ) = 17 * 6274972541520725051501 *
76036059098181489065831541643449683
8 ( 58 ) = 3 * 19 * 24678421 * 2458793611 *
23451252905437305611053236276989181905833
8 ( 59 ) = 7 * 47 * 1367 * 3805189471 * 42553206137671 *
11138003872652282858294463992497
8 ( 60 ) = 18433 * 32327 * 936436931 *
14535848617462129845929414356057659085642091
8 ( 61 ) = 3 * 53201 * 8464427575951 *
60040141475067594202718130294367810263835987
8 ( 62 ) = 269 * 857 * 947 * 5087 * 542220001 * 9419045107 *
143005625514707748519484785329629
8 ( 63 ) = 113 * 129553 * 222132263 * 415708947381145447 *
6000029973518031288747138090359
8 ( 64 ) = 3^2 * 397 * 2647 * 37870732423 *
226459053950687580308941060109012808759348376747
8 ( 65 ) = 7^2 * 103 * 212976014099 *
754599218528688271960516258148411982551444819710187
8 ( 66 ) = 274401961 * 64996880867741 * 1756449433740352577 *
258919627012127108958019643
8 ( 67 ) = 3 * 29 *
932311621966794380587484035759897828863346104725415070242656449553
8 ( 68 ) = 366395594941 * 99836954102879288647969417 *
22173731493852253938653359210363
8 ( 69 ) = 379 * 2659 * 8423 * 48533 * 315725294439302933 *
62360485589240632899500264525286628633
8 ( 70 ) = 3 * 479 * 34036213 * 169119617 *
9805920394820881149042484174381589461047367061182343
8 ( 71 ) = 7 * [C 72 ]
8 ( 72 ) = 23 * 20611 *
17110135598996549143473643476807679966398506308600749517693403714587
8 ( 73 ) = 3^2 * 17 * 1047346453 * 180547673213617 *
2803539360199295132307934943038284817117553559187
8 ( 74 ) = 187888541221 *
4316980193896223230878384313426480744474240537012334096688660091
8 ( 75 ) = 13441 * 17107 * 1542473 *
22869535483184953130030268112401803245782278726626860547896661
8 ( 76 ) = 3 * 19 * 71 * 97 * 127 * 149 * 6091 * 7447243 *
240713971481327144827456622918937055598014160897059561171
8 ( 77 ) = 7 * 1889 * 2061323245566877 *
29758035115101434208538650257583395630678052575422275134741
8 ( 78 ) = 167042989 * 6322481117790908663 *
7680059014386145108899481388777502021718245594151573
8 ( 79 ) = 3 * 4263917527937 *
6340891178098910261394077409910181525879967365346160837155348744301
8 ( 80 ) = 67 * [C 80 ]
8 ( 81 ) = 565241 *
14349827969151408180070290568290536445712733349334374383866547386178835419071
8 ( 82 ) = 3 * 3 * 3 * 3 * [C 82 ]
8 ( 83 ) = 7 * 179 * 331 * 6357517633 * 544543768397 *
6101454544949335444946039 * 92586472898265518012305610295443
8 ( 84 ) = 206383 * 1580957123075009 * 3271873489759572107 *
7597834600411468763459557692617712259395976859
8 ( 85 ) = 3 * 19219 * [C 82 ]
8 ( 86 ) = 15641 * 393593 * 1349017 * (probable prime)
8 ( 87 ) = 2450387 * (probable prime)
8 ( 88 ) = 3 * 74143 * 137477 * 331063 * [C 73 ]
8 ( 89 ) = 7 * 17 * 9767 * [C 84 ]
8 ( 90 ) = 44051431 * [C 84 ]
8 ( 91 ) = 3 * 3 * 322951 * 8335463 * [C 79 ]
8 ( 92 ) = 347 * [C 91 ]
8 ( 93 ) = 150804883 * [C 86 ]
8 ( 94 ) = 3 * 19 * 23 * 6500093 * [C 85 ]
8 ( 95 ) = 7 * 29 * 167 * 977 * 18367 * 4274593 * [C 78 ]
8 ( 96 ) = [C 97 ]
8 ( 97 ) = 3 * 2143 * 5737 * [C 91 ]
8 ( 98 ) = 89 * 222127 * [C 92 ]
8 ( 99 ) = 103 * 433 * 1931 * [C 92 ]
...
8 ( 110 ) = (probable prime)
...
8 ( 141 ) = (probable prime)
...
8 ( 474 ) = (probable prime)