Base 22 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 69: | \[{22^{69}-1\over21}\] | 3 × 132 × 4463 × 1323064018651<13> × 60575166785239<14> × 111284674149221479321933039375712865638979268198676574953779<60> |