Base 26 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 67: | \[{26^{67}-1\over25}\] | 4691 × 2728777 × 28661603960447<14> × 57073588142876873<17> × 121424174293928541805321819040594753174421778856178851<54> |