Base 7 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 686: | \[{7^{686}-1\over6}\] | 23 × 29 × 113 × 197 × 883 × 911 × 1373 × 3529 × 3823 × 4733 × 8233 × 49393 × 161309 × 734021 × 1074473 × 1445599 × 13473433 × 19847549 × 32442313 × 101361401 × 2722731943 × 568927133840129<15> × 83517610741606021<17> × 141067436349500417<18> × 6106505825833677713<19> × 20313193382308673633557<23> × 10724186844800812803083930897<29> × 1575721793366942921257214180187566081951195327261<49> × 3820721406303592916698114189500786131488007851946012293783691<61> × 48745631394304796517436882202603335032050461040959402779987692316899240176943069854414951<89> × 5332902189180506011062825458257231496224162451930739764129433640419984473295700629112679816827699536947572893433715447735526112150735662969904956786361381280997666161<166> |