Base 8 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 319: | \[{8^{319}-1\over7}\] | 23 × 89 × 233 × 1103 × 2089 × 4177 × 18503 × 64439 × 599479 × 84819793631<11> × 9857737155463<13> × 1609806083534335902079374125310994612192903<43> × 69586779567906400453376529267198885406422141822768937<53> × 9609322039095554268277107484843200218262250152281700954275029793<64> × 58928204377201809677199199089493820795164867153237185862568685348148757401<74> |