Base 8 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 473: | \[{8^{473}-1\over7}\] | 23 × 89 × 431 × 9719 × 116359 × 599479 × 2099863 × 12853303 × 18449839 × 133139883512681<15> × 4193551379485561391<19> × 11053036065049294753459639<26> × 1703616691469833244854254847<28> × 110790754439643451011977643288649104711084253377796092209089<60> × 6151075762702996102937847623399226405522756351373008609879381934775267490824195693037585888112641649<100> × 971132882734080911406412161829693148756735445750405405132042285228592807040176139624066490195346621597398204352323749781461564792663479542079<141> |