Base 31 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 358: | \[{31^{358}-1\over30}\] | 25 × 359 × 1433 × 4297 × 534137 × 7663349 × 15648539 × 316465199 × 1513770781 × 48551112257<11> × 12229312501398383<17> × [18503897316734897377920011143468735062634220940217301730566156121792905046142653424196537122068662623543258998896799821333525866112303878395587120737801288273192867304540152662962557353300813385461202251121958254656938077<221>] × 1129571146083643971972267950207321531872616827325618810065622098191531698557628088943451327903576192614622207337781440768509065898968386864739999901710422159590183278422153364066404925187368048578775351036134980018219509250202304595864051<238> |