Base 5 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 318: | \[{5^{318}-1\over4}\] | 2 × 32 × 7 × 31 × 107 × 5407 × 1725469 × 5960555749<10> × 17154094481<11> × 28838378869<11> × 1775305720077559<16> × 27145365052629449<17> × 599659003321309822423087<24> × 2239678151546732477719339309862512328008393109037131818519<58> × 629126000698440176948173290025536367961358687591029988395118907<63> |