Base 20 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 376: | \[{20^{376}-1\over19}\] | 3 × 7 × 401 × 1129 × 2633 × 4889 × 6863 × 64109 × 160001 × 637455173 × 84039499433<11> × 790551835729<12> × 1930941642781<13> × 4378474774721<13> × 1291054258015657<16> × 5634378340885013<16> × 87910897915022054334374219609<29> × 267067556675321437729722313331881<33> × 117607651830033471085155671900584513818329244290849<51> × 1523201995370741149853911341808474202883334149728543<52> × 1094446075788854289426471519954075875187442867930884001<55> × 3636495151135086775965588112151320542769931419647227700289<58> × 215655379576462927492199938985786547440684168603371036082845952324999135002393504944180912003553033<99> |