Base 18 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 900: | \[{18^{900}-1\over17}\] | 54 × 73 × 11 × 13 × 19 × 31 × 372 × 41 × 61 × 73 × 101 × 151 × 181 × 229 × 307 × 401 × 457 × 601 × 991 × 1201 × 1801 × 2711 × 5101 × 6301 × 9041 × 15101 × 15121 × 16921 × 18401 × 22501 × 25309 × 34327 × 43651 × 102701 × 130651 × 136651 × 145501 × 313921 × 465841 × 558721 × 585721 × 602401 × 738851 × 828811 × 1597801 × 18088801 × 33388093 × 106487551 × 794010601 × 7804804801<10> × 11630180251<11> × 78180455401<11> × 201870485101<12> × 240320568001<12> × 673445124601<12> × 872666624341<12> × 52745811435001<14> × 127498937974201<15> × 520007906970451<15> × 1437058645425001<16> × 8317058910008581<16> × 27902025782474101<17> × 246054241904217701<18> × 7414337897636419261<19> × 17254127651933924651<20> × 21162386787273369601<20> × 440271189050330811601<21> × 1425616856701549185601<22> × 6300173527405435886851<22> × 1386116069876795574233701<25> × 1614949986544027569856891<25> × 5505021890449180002162001<25> × 624718085771156610609173701<27> × 129278406971133461403718040401<30> × 251237011409103759645563841601<30> × 1338029376807245057016053427001<31> × 9102797501693359358605478900008701670201<40> × 31379631577282116226581751609075332167652772201<47> × 11283753694336101137481467668017837350991493517101<50> × 241508817713952749319865534915659720898360211091151<51> × 165286280675668275834679549389769451958294090707563351<54> × 956524538552362980652873341259326299002091009557943048388539851<63> × 33666195836127380494957962105207986097007474793507597353619648182737843836973280243599569369414566268822418822174775178516628938448337801<137> |