Base 32 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 52: | \[{32^{52}-1\over31}\] | 3 × 52 × 11 × 41 × 53 × 131 × 157 × 521 × 1613 × 2731 × 8191 × 51481 × 409891 × 7623851 × 34110701 × 108140989558681<15> × 145295143558111<15> |