Base 24 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 81: | \[{24^{81}-1\over23}\] | 19 × 163 × 379 × 601 × 2017 × 2377 × 4987 × 2400571 × 3227151869857<13> × 323640485558628743847259<24> × 6444015909193404598468770866468505820639936987153<49> |