Base 5 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
223: | \[{5^{223}-1\over4}\] | 355909 × 521089119787280089254800421111525630620125478529313813707020482611788594850878926775848894341419918790524954291125141402303617973258996735924842895159<150> |