Base 5 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 108: | \[{5^{108}-1\over4}\] | 22 × 34 × 7 × 13 × 19 × 31 × 37 × 109 × 163 × 271 × 487 × 601 × 829 × 4159 × 5167 × 31051 × 6597973 × 16018507 × 14551915228363037109375001<26> |