Base 8 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 381: | \[{8^{381}-1\over7}\] | 73 × 2287 × 15241 × 349759 × 518814559 × 100342091647341370469161844713<30> × 170141183460469231731687303715884105727<39> × 339212878596211796110770323541353281494127285320354524672773903<63> × 6383201165041263293438818852856403539005299068589206774444995180584831995934830825789118948375140016863523900789006730324087565235864101955282593969954988634176364740441107028178977211347727<190> |