Base 31 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 348: | \[{31^{348}-1\over30}\] | 26 × 3 × 72 × 13 × 19 × 37 × 59 × 233 × 331 × 349 × 2437 × 10789 × 18329 × 29581 × 49823 × 922561 × 1838659 × 6226417 × 24589681 × 1482570191 × 10438779913<11> × 11242578713<11> × 19442411479<11> × 189343400041<12> × 1602846874753<13> × 1671541885847<13> × 208898666650411<15> × 646550190571213<15> × 5155437699613779037<19> × 3061037680116618496603<22> × 314649720553734227827122232080103478692310043172063<51> × 1480537408333241006942871103432327233924912298742791<52> × 15103620150581691111572104100485832401127450987663744569<56> × 118769857129876511371020605597770392489158169320792491427660101<63> × 426912196707290549676567787128806068919532226604132986989302779853344546845494764858611841<90> |