Base 22 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 52: | \[{22^{52}-1\over21}\] | 5 × 23 × 53 × 79 × 97 × 2003 × 498733 × 85107437663<11> × 2468996151857<13> × 2526873929581<13> × 12296089473177511<17> |