Base 22 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 56: | \[{22^{56}-1\over21}\] | 5 × 7 × 23 × 29 × 43 × 73 × 97 × 113 × 3209 × 4481 × 83273 × 86969 × 3096409 × 16968421 × 34379269 × 472286706064064294087273<24> |