Base 26 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 55: | \[{26^{55}-1\over25}\] | 5 × 112 × 23 × 8641 × 65539 × 3279541 × 97395563 × 208341431 × 470196238294201<15> × 108053807086151803039211071<27> |