Base 11 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 257: | \[{11^{257}-1\over10}\] | 1194023 × 293147639462911<15> × 292888771585604069921<21> × 6543799984554591443839328899263899259342186404598168438689777<61> × 80503274600310907473769969739141290529672563370974503552890224363591969<71> × 8044048981814145086074156991409771411946542864923179657891642655370382381373277522420756983993<94> |