Base 25 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
30: | \[{25^{30}-1\over24}\] | 2 × 3 × 7 × 11 × 13 × 31 × 41 × 61 × 71 × 181 × 521 × 601 × 1741 × 2281 × 7621 × 9161 × 69566521 |