Base 18 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 450: | \[{18^{450}-1\over17}\] | 73 × 11 × 19 × 31 × 41 × 73 × 151 × 307 × 601 × 991 × 1801 × 2711 × 9041 × 34327 × 43651 × 130651 × 136651 × 465841 × 558721 × 602401 × 738851 × 828811 × 106487551 × 794010601 × 11630180251<11> × 78180455401<11> × 52745811435001<14> × 520007906970451<15> × 17254127651933924651<20> × 21162386787273369601<20> × 1425616856701549185601<22> × 6300173527405435886851<22> × 1614949986544027569856891<25> × 129278406971133461403718040401<30> × 1338029376807245057016053427001<31> × 9102797501693359358605478900008701670201<40> × 31379631577282116226581751609075332167652772201<47> × 241508817713952749319865534915659720898360211091151<51> × 165286280675668275834679549389769451958294090707563351<54> × 956524538552362980652873341259326299002091009557943048388539851<63> |