Base 8 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 550: | \[{8^{550}-1\over7}\] | 32 × 112 × 23 × 31 × 67 × 89 × 151 × 251 × 331 × 601 × 683 × 881 × 1801 × 2971 × 3191 × 4051 × 20857 × 100801 × 201961 × 599479 × 10567201 × 48912491 × 415365721 × 10006979401<11> × 1133836730401<13> × 702948566745151<15> × 2252127523412251<16> × 9115784422509601<16> × 382027665134363932751<21> × 2048568835297380486760231<25> × 65966684197384718027476767451<29> × 4074891477354886815033308087379995347151<40> × 4108316654247271397904922852177568560929751<43> × 101249241260240615605217612230376981800142669401<48> × 1657154808755021818820630633083400618861135574408955395309601<61> × 3793323745900631793671602131884715291207977052108981859453982099078015780480348251<82> |