Base 7 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 508: | \[{7^{508}-1\over6}\] | 24 × 52 × 509 × 3049 × 15241 × 23128733 × 35852863 × 260461507 × 232858973932476553<18> × 554351226505275380676162672703<30> × 206298375590160646565940288626398300890112694477191593608184249768901<69> × 245341643198368582843352144598480744468850041775022125500767047213117<69> × 741032495985054494965752048538969622639319685349813800035647633877536858783525580078479148995633161<99> × 34379761463750364702166763077605324907447640401813740252150553064861457688716334389066106050454966625884817533<110> |