Base 18 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 520: | \[{18^{520}-1\over17}\] | 53 × 11 × 132 × 19 × 41 × 53 × 79 × 113 × 131 × 521 × 881 × 911 × 929 × 1873 × 2081 × 2711 × 3121 × 9041 × 15101 × 21997 × 145501 × 47399041 × 2570316451 × 4020180841 × 5601346141<10> × 29759719289<11> × 47499385441<11> × 1468823240041<13> × 15715445027621<14> × 137841514501966721<18> × 260800658620746193<18> × 3242950762090314211<19> × 4242008183117477761<19> × 19550753008230882123401<23> × 93927399066109058591441<23> × 260674349667764744544365521<27> × 491989761590943434784307681<27> × 72667528832748478581880458571<29> × 7122627224638909118690351246321<31> × 127359418819403064186024966593282777801<39> × 3666313911384869983836065484314196953809<40> × 879700315136497888790604032685396769778557686061<48> × [23310291675790120416394993361928835620133239895478192347652485413432216915438595749454313496398663220624934721484532595008405854987006316664853781867498241<155>] |