Base 13 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 118: | \[{13^{118}-1\over12}\] | 2 × 7 × 5783 × 273997 × 5311771 × 30233706222041559662776806806113588758534692993333729<53> × 6521936381117722253551175198473042077230030832125770878689819<61> |