Base 7 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 316: | \[{7^{316}-1\over6}\] | 24 × 52 × 317 × 2874811 × 13059374383501<14> × 7573763065938754357<19> × 24911171121703051981<20> × 40157473329867190572836333<26> × 913242407367610843676812931<27> × 104875706439110156251225614941159441477<39> × 1056836588644853738704557482552056406147<40> × 51337819768574832591596273345539751978994219961793389439942274470222227373<74> |