Base 31 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 154: | \[{31^{154}-1\over30}\] | 25 × 23 × 397 × 617 × 2927 × 11971 × 71821 × 757241 × 818819 × 150332843 × 917087137 × 1048563011 × 23503054499<11> × 16169321243923<14> × 263768160996144192120004532942855021486760529559458116494001319<63> × 382209962506614718527774493539296028007087595862045098246402975616281748634348102379<84> |