Base 8 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 293: | \[{8^{293}-1\over7}\] | 1759 × 288313 × 142891999 × 4010077111 × 12760970401<11> × 4703954662078801<16> × 40122362455616221971122353<26> × 94031095460270951212691599<26> × 396645227028138890415611220710757921643910743103031701971222447<63> × 22058216476354148174340292661422016859535838566235695959824441565750734320744258662775535748560023<98> |