Base 25 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 66: | \[{25^{66}-1\over24}\] | 2 × 3 × 7 × 13 × 23 × 31 × 67 × 89 × 199 × 601 × 1453 × 5281 × 595123 × 12207031 × 190771747 × 386478495679<12> × 1030330938209<13> × 6509387183417404924784917<25> |