Base 5 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 69: | \[{5^{69}-1\over4}\] | 31 × 139 × 6211 × 8971 × 332207361361<12> × 598761682261<12> × 8868050880709<13> |
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 69: | \[{5^{69}-1\over4}\] | 31 × 139 × 6211 × 8971 × 332207361361<12> × 598761682261<12> × 8868050880709<13> |