Base 8 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 374: | \[{8^{374}-1\over7}\] | 32 × 23 × 67 × 89 × 103 × 307 × 683 × 1123 × 2143 × 2857 × 6529 × 11119 × 20857 × 43691 × 131071 × 146983 × 314161 × 599479 × 707983 × 153356423089<12> × 2009643799642447<16> × 2056186475270066900583885539731<31> × 1032670816743843860998850056278950666491537<43> × 14407170630221060156595686931380920555127810203<47> × 2191165825376888084750157716424579062015865776131<49> × 12648384035384787780871703134944437615763117128688347014641503430279486998671<77> |