Base 8 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 323: | \[{8^{323}-1\over7}\] | 103 × 647 × 2143 × 7753 × 11119 × 32377 × 131071 × 524287 × 1212847 × 11726744977<11> × 540538609159<12> × 39044358788825633753<20> × 78161016568215708061327<23> × 432185728407904618000990086610965513529<39> × 1269639828454588763972435091645259869185718465075550865591017<61> × 2021373594576291102905239976417130814821967471208793180343069642403609802281629056105150199<91> |