Base 5 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 157: | \[{5^{157}-1\over4}\] | 32029 × 5129819 × 2107089779 × 8616314452100494153901371725720169<34> × 4587548699755676969742331799602074877905422766102260881<55> |