Base 31 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 232: | \[{31^{232}-1\over30}\] | 27 × 13 × 37 × 59 × 233 × 349 × 409 × 1129 × 10789 × 18329 × 49823 × 1176937 × 1838659 × 1482570191 × 11242578713<11> × 189343400041<12> × 1671541885847<13> × 646550190571213<15> × 35029132682927321593<20> × 3061037680116618496603<22> × 12199090037830259497694286560814872697569514517589941334894537<62> × 118769857129876511371020605597770392489158169320792491427660101<63> × 214288666303958012918266337859340668976412915383863165842629598535571341745941593<81> |