Base 4 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 433: | \[{4^{433}-1\over3}\] | 2837017 × 22086765417396827057<20> × 737748363812546584876297<24> × 5028667832511715101284999<25> × 270704078857734344240200528055897595961633472511075822112527121<63> × 2606183132138030764546859544508036625264200226623778027104271451894363041937476932557423900859378779986059264324844085017443<124> |