Base 31 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 179: | \[{31^{179}-1\over30}\] | 1433 × 1513770781 × 12229312501398383<17> × 1129571146083643971972267950207321531872616827325618810065622098191531698557628088943451327903576192614622207337781440768509065898968386864739999901710422159590183278422153364066404925187368048578775351036134980018219509250202304595864051<238> |