Base 25 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
53: | \[{25^{53}-1\over24}\] | 107 × 5960555749<10> × 17154094481<11> × 28838378869<11> × 27145365052629449<17> × 599659003321309822423087<24> |