Base 20 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 335: | \[{20^{335}-1\over19}\] | 11 × 61 × 251 × 369841 × 679381 × 906779 × 607366391 × 2673014734142881<16> × 521469361412813281843723876681<30> × 141027529625834791277325880782894530434550121999834925322075700531980089<72> × 66219889087445251810182963092778964498224088258183388672238931598375498406306844664064610789170453306550048681889865111260494931551<131> × 1214214867014971601101751243801418852551726356121605532438216943888208186174367041815892084217249077009807440132870307661848368187519223837593595409193924351<157> |