Base 4 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 769: | \[{4^{769}-1\over3}\] | 36913 × 77836643 × 86369467 × 1591805393 × 9401836358059<13> × 602141772875227166401<21> × 6123566623856435977170641<25> × 736733277281602272597319321214031796144024068366410251287548291392259570272794314090093001342596451595133086144058843365013629333464915335715728303031159385283835550134447566273<177> × 318546066432510864421008240940953964550146359805454160170583982749610782139649800826799605008947296776383497027214615205280760850363069110188256133177326304163304017678312995641260076490527951071647<198> |