Base 7 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 235: | \[{7^{235}-1\over6}\] | 2801 × 13722816749522711<17> × 63681511996418550459487<23> × 2812894619735804087343816418261851587705080375647708714001<58> × 95932320890617893275692373129662298731815782892355053309279163270297790758653791048485352892704401<98> |