Base 31 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 268: | \[{31^{268}-1\over30}\] | 26 × 13 × 37 × 269 × 1609 × 882659 × 561825821 × 29680880741<11> × 434585936689<12> × 215725957975181<15> × 111558400193618429<18> × 1718795629713735456383<22> × 447772934301264047325373<24> × 25809359116491949389228217<26> × 1334574386438395108609084044317<31> × 527131117082818023708828465382157379763<39> × 3508378789510565665283547691676271445309<40> × 29721615541760946429045568290816373296349<41> × 53991812239703599859025281313825257574945387378898637055578570844244830248221549448804150707822554481<101> |