Base 31 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 292: | \[{31^{292}-1\over30}\] | 26 × 13 × 37 × 293 × 8761 × 9929 × 30223 × 122840087453<12> × 197340338942587<15> × 833039147209543<15> × 74103684225257737<17> × 188869732152531369613<21> × 29983589425109912405377<23> × 2710514043290461922697493635857377<34> × 404318326024801439191676313735836288644493580299053616879363447<63> × 2652142885657235891191034118532317053019611809909498684910991535552045251272749<79> × 171405487205378479603821830555472324780238561008438105065100521661520332374331427625973812817972859069944959499885770947626590218535771641573<141> |