Base 7 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 471: | \[{7^{471}-1\over6}\] | 3 × 19 × 4397 × 5653 × 32029 × 42391 × 222679381 × 1481972299 × 3346629271 × 1039945344901<13> × 19412686824648044821099<23> × 30888375309332174699747764157798083891019286829175554176515308211775675085491164240495874534303554491469173279661<113> × 13831819814686303223353125613614154361265543542190273780097354173320320074197412629516368650237261158050870418638916738850528424504222841426519854215298391409665579251398703653459714934515505312380141144409<206> |