Base 31 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 522: | \[{31^{522}-1\over30}\] | 25 × 32 × 72 × 19 × 59 × 331 × 349 × 523 × 577 × 2437 × 3637 × 10789 × 29581 × 49823 × 81343 × 1538083 × 1838659 × 6226417 × 24589681 × 525763621 × 1482570191 × 11242578713<11> × 19442411479<11> × 189343400041<12> × 1671541885847<13> × 102182193014509<15> × 208898666650411<15> × 5155437699613779037<19> × 78984406417023018433<20> × 202338644001987940129<21> × 3061037680116618496603<22> × 314649720553734227827122232080103478692310043172063<51> × 1480537408333241006942871103432327233924912298742791<52> × 8338194688893196605061566386721756385209827647940593780022287361718907662905945050011077271808331419746528744260916578872316488603942453935193460193398055415628134796484626022669252638584187878307032088437633<208> × [334325468458483852826209658395857624052769474102561354149571978013737945294560634951342432738736422037531360211212060433337162573806594321818286764743856134422806192298200499187075047461932673922736546088393739434071305654586563<228>] |