Base 23 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 75: | \[{23^{75}-1\over22}\] | 7 × 79 × 6551 × 292561 × 74912328481<11> × 2700470569501<13> × 261968569374120475321751<24> × 1090621172879625550471378131249830699682901<43> |