Base 4 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 571: | \[{4^{571}-1\over3}\] | 5711 × 9137 × 27409 × 73205584889<11> × 9640632099001<13> × 90794862316027093768853899468313<32> × 6969336604531667168509871230100794095801832527002849548226132675916172927<73> × 7084851186360580941633572744569751943590093912197024061201633650193388126309578906138706239<91> × 4400394826437109072660230154828562786899807215815105326143790288753956409884398830235540110306174036457083385987<112> |