Base 20 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 435: | \[{20^{435}-1\over19}\] | 11 × 31 × 59 × 61 × 251 × 349 × 421 × 929 × 3001 × 8179 × 10789 × 143609 × 200971 × 261451 × 564979 × 1177459 × 466307299 × 42516584771<11> × 69532147589881<14> × 71353204641689<14> × 286934932103531<15> × 60310248217276381<17> × 1197407098426779145291<22> × 2511778854830594606611<22> × 312853876283494435841671<24> × 692012806659357739574341<24> × 19840908591991639613963221<26> × 374751027121579773391551841<27> × 2094833682473220069431724501566853421<37> × 3605403851353821123741083595382953185544609831777342451<55> × 512005690496370962325576804550581385298881634723171002789387478967665040481<75> × 2621589448292006177492026538021986915819336407498665060864148230126273855119178128099652378765836104270165192163055915555101<124> |