Base 7 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 657: | \[{7^{657}-1\over6}\] | 32 × 19 × 37 × 439 × 877 × 1063 × 1128727 × 3675989 × 359390389 × 1958423494433591<16> × 16999040225222266951<20> × 7222605228105536202757606969<28> × 2851116683875011630728750076085750994956395457550352356569780110746271113218957147554185030682022963<100> × 106781586510966308935198157517105792256284428289964341321863817745471489961606303307238229975513936157785993576688493689897355194425804676447140269166969098723053179822387497105430624915532868008347240741232390711840946374341708281764331916078561153286874800283023079551526200062141607742311691337550271353141576529130113125898213341481347628456183929605660263<360> |