Base 31 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
133: | \[{31^{133}-1\over30}\] | 571 × 14251 × 917087137 × 775559048587<12> × 88770666332610762169<20> × 6615999805162252631529700657218371717794350611836567<52> × 22009599606722820377321592030269006572769075024025398439477709228249757284067962377156179182208149<98> |