Base 28 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 720: | \[{28^{720}-1\over27}\] | 32 × 52 × 11 × 13 × 17 × 192 × 29 × 31 × 37 × 41 × 61 × 73 × 127 × 157 × 181 × 193 × 241 × 271 × 601 × 757 × 1801 × 1861 × 3061 × 3511 × 4621 × 7129 × 7321 × 12241 × 12781 × 14561 × 15601 × 15991 × 24481 × 29201 × 39241 × 41641 × 45541 × 47221 × 50221 × 53951 × 59809 × 84961 × 102547 × 151201 × 444979 × 614657 × 637421 × 691651 × 734941 × 2449561 × 7302331 × 33806737 × 48403441 × 51605161 × 84673681 × 188878213 × 343785529 × 365764369 × 688406401 × 1350615169 × 7257822361<10> × 14046305041<11> × 22223646961<11> × 551640495331<12> × 2863024493281<13> × 14615481986478001<17> × 4411542432420060881<19> × 301407243681066768937<21> × 1228279101647209944401<22> × 1114029602365666612314868561<28> × 4670645471285868887850684885028561<34> × 20642670587235267701919307574102881<35> × 1163274799691679507451230132400597318921806951299089<52> × 1257019733614904150336558897946087643548174624248023090029790321<64> × 415062985810458893409554726039367877606025720816476704242996094661583034284973255027593379841<93> × 215491896168712423199032272632722866344513876152420743958952104492141668591492233229284338831950492832385152823252484081010457437776121<135> × [16873333788230032258231749918249465758881020816294898797520169135757297647225447353502622024271700661002571438502022326080096153253282253112246347165667171807690277634981202467434049748303527979397590805429144281381601<218>] |