Base 31 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 285: | \[{31^{285}-1\over30}\] | 3 × 5 × 11 × 331 × 571 × 2521 × 2851 × 7639 × 14251 × 17351 × 5271361 × 327412201 × 36068660903683<14> × 793926617318201<15> × 88770666332610762169<20> × 1716439847900062900800798410166938893<37> × 291085900456038886134880893459441846658670815367779265015895596556789125915380655528060127881<93> × 3920936251148401470200658014908241714694170538116613994218282834772718364953818724273250282786815182530766295583349833898930740449605685960721311306996507348061046948435659667145938134935154533324580155851<205> |