Base 8 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 581: | \[{8^{581}-1\over7}\] | 7 × 127 × 167 × 337 × 798037199 × 1621324657 × 175908273685537<15> × 57912614113275649087721<23> × 8241594690167137359552274418432855740327<40> × 15444711420006203351165170879848557117713<41> × 2971973409500325953167938550558277137022719033111954012803581886623047449962315856161<85> × [283888460996785534375907412640051015933430622052597802490326131027177909600383733157004891980978542825982080449445339042516867948081976522320841164880021334908475293623035437705998007798385145875998104660419861794572731189376068737054742200353147417665578853964293688410796696220025300296337980551<297>] |