Base 11 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 97: | \[{11^{97}-1\over10}\] | 389 × 4247091263 × 6266849507589571978149106488222106980975381364824424072801340422775737133656105189072051<88> |