Base 8 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 415: | \[{8^{415}-1\over7}\] | 31 × 151 × 167 × 1621324657 × 470933694191<12> × 3028917598961<13> × 130666175908831<15> × 57912614113275649087721<23> × 32367218471375835379289471<26> × 46782247616476922972329742136208001<35> × 8241594690167137359552274418432855740327<40> × 262868549485977869071153367391265889903103683620908031985454238816270819685799271<81> × 1928419635475117602195367749373062713744841999753881443337557769427749248965902246656838407248741220409515592293216321<118> |