Base 8 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 555: | \[{8^{555}-1\over7}\] | 31 × 73 × 151 × 223 × 631 × 1999 × 10657 × 23311 × 27751 × 93241 × 169831 × 321679 × 1238761 × 26295457 × 36085879 × 199381087 × 319020217 × 616318177 × 698962539799<12> × 89323031153071<14> × 1587855697992791<16> × 4096460559560875111<19> × 7248808599285760001152755641<28> × 30382473782337070766706891765775546594587147791566105506524244468947713551683592001<83> × [16845174376933137485679616537815155974354954199414609768196269772110156874107639093457483365131192830515781855087856777474116791680834194386458746931839784636061236373246329530984719230525858668917839484304589130688692792560500385347787101631<242>] |