Base 23 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 70: | \[{23^{70}-1\over22}\] | 23 × 3 × 29 × 31 × 41 × 71 × 211 × 673 × 2969 × 52291 × 292561 × 5336717 × 12968551 × 6696671101<10> × 15716677201<11> × 110350430401<12> × 29228211639650804163601<23> |