Base 31 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 405: | \[{31^{405}-1\over30}\] | 34 × 5 × 11 × 271 × 331 × 2521 × 2593 × 3637 × 13933 × 17351 × 36451 × 63901 × 81343 × 106291 × 477739 × 2068741 × 6757669 × 7822981 × 327412201 × 1344742561 × 50358897181<11> × 302533008751<12> × 1836205027201<13> × 126901881805771<15> × 8698512399408001<16> × 337048683633480845467801<24> × 41572982762295483893808010501<29> × 280377166850713273629309325557934604953392483391<48> × 124796720050174992115146031610052568212932455637390989<54> × 20761814779832795825219127099828500776192963622047433110042698407780162546670686767814807647357492081564462686094542337420599547163662698622201792348581341293058860905247911212575149507735564239142000734398673894116267731758990101611345050649036631721976162083098816476602907231277200692303201551<296> |