Base 5 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 125: | \[{5^{125}-1\over4}\] | 11 × 71 × 101 × 251 × 401 × 3597751 × 9384251 × 28707251 × 4032808198751<13> × 767186663625251<15> × 24687045214139234043375683501<29> |