Base 25 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 74: | \[{25^{74}-1\over24}\] | 2 × 13 × 149 × 9103 × 9769 × 40849 × 29010221 × 13971969971<11> × 8737481256739<13> × 45920153384867<14> × 510241095096183757930733363918820917976121<42> |