Base 23 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 50: | \[{23^{50}-1\over22}\] | 23 × 3 × 31 × 41 × 101 × 211 × 6551 × 56951 × 292561 × 1068701 × 279175761283651<15> × 261968569374120475321751<24> |