Base 13 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 640: | \[{13^{640}-1\over12}\] | 27 × 52 × 7 × 11 × 17 × 41 × 193 × 257 × 421 × 601 × 641 × 1601 × 2411 × 2657 × 10433 × 14281 × 29881 × 30941 × 96001 × 441281 × 444641 × 3230593 × 4335041 × 283763713 × 407865361 × 543124566401<12> × 894379987201<12> × 1116130730334721<16> × 1266394281048641<16> × 36713826768408543617<20> × 68675120456139881482562689<26> × 71959448437394390697988942241<29> × 442779263234039928595359287744639041<36> × 3215877717636198473712500018174097551256193<43> × 1218717648107630002329276423567229540624786569051585904260280734401<67> × 328526372400716009198947426723521390690564254694871908213443609530365761<72> × 1651870957826072167195950817511647204036521136261672079433595965286924221199094543946407987536314150089359104367725627465355790834951331332789705191970673805510314474907119935144905683049525874566395718490006243231125553559590161106547223090719574961778997583392172079141121<274> |