Base 8 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 307: | \[{8^{307}-1\over7}\] | 14608903 × 85724839 × 85798519 × 23487583303<11> × 78952752017<11> × 1240718764955671<16> × 7718960266212068280249289<25> × 112177476474470525577861298937835338545723093134076373561<57> × 11829883384183803555617397809738285174209809981632088992888009340082737492358515839427961249270718884790207379104927217354645342358390399<137> |