Base 13 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 720: | \[{13^{720}-1\over12}\] | 24 × 32 × 52 × 7 × 11 × 17 × 19 × 31 × 37 × 41 × 61 × 73 × 157 × 181 × 241 × 271 × 421 × 601 × 641 × 937 × 1009 × 2251 × 2411 × 3889 × 4177 × 4441 × 4651 × 8161 × 12601 × 14281 × 28393 × 29881 × 30941 × 161971 × 181297 × 217561 × 428041 × 680401 × 1471069 × 1609669 × 28325071 × 407865361 × 460655521 × 815702161 × 1030309681 × 1453046401 × 2643964801 × 29975087953<11> × 465630152401<12> × 543124566401<12> × 659481276875569<15> × 6654909974864689<16> × 9818892432332713<16> × 14513462249341141<17> × 558181416418089697<18> × 19145097390154976011<20> × 56156144390197362704881<23> × 2997534286720771645924621<25> × 442779263234039928595359287744639041<36> × 20300651374434580451862189685540688221<38> × 298630427465034388053076938177326459297282487329761<51> × 86808413954906304103116630206843495771493950081562881689622343742747363793651486959117251383493731065033921<107> × [16183876182648906967581760957070149264877894224028686544294626278186259686654029341560541057887842329715407597883675571697021894890141433300159199590813432264761206937481456865743305903694604823424517041<203>] |