Base 11 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 212: | \[{11^{212}-1\over10}\] | 23 × 3 × 61 × 107 × 1697 × 351497 × 5353637 × 6005113 × 17148893 × 410982353 × 23746234974173<14> × 22250800656016001<17> × 72744498860303958101<20> × 8357265774463208206521728596439861293<37> × 6918082374901313855125397665325977135579<40> × 126677960191097543520664118849393238006955092974209<51> |