Base 8 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 507: | \[{8^{507}-1\over7}\] | 73 × 79 × 937 × 4057 × 6553 × 8191 × 86113 × 121369 × 1495082161 × 7830118297<10> × 6740339310641<13> × 695733626238774859031285809<27> × 3340762283952395329506327023033<31> × 8342680841093063014359532631803433656669591074421858694040109486076573471951766107416262860801<94> × [558428902204212291067962487916862051890749959923263740371569267826774155740573768055073667646972614764745199215028885996409080881208279434767411967984688439334955629839248054296100798454869381413444290801629633441512663957668100693283905710419489<246>] |