Base 11 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 99: | \[{11^{99}-1\over10}\] | 7 × 19 × 397 × 661 × 1453 × 2377 × 15797 × 1772893 × 1806113 × 1240500097 × 637265428480297<15> × 259907136283958423102397466923798834567695212357<48> |