Base 31 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 399: | \[{31^{399}-1\over30}\] | 3 × 43 × 331 × 571 × 6301 × 7639 × 14251 × 917087137 × 775559048587<12> × 2813432694367<13> × 36068660903683<14> × 88770666332610762169<20> × 1716439847900062900800798410166938893<37> × 6615999805162252631529700657218371717794350611836567<52> × 22009599606722820377321592030269006572769075024025398439477709228249757284067962377156179182208149<98> × [14071867235615152067730452402551051209615711266756799487566445179984431202794728280779102384315269538293056602712678132090423595024606352328486369278404404984646931000869655633962154873483861676985627961237585413744371884335010403279151457898874710241882216553229536929743866367229824412264387385611110958681110117539789441<323>] |