Base 7 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 648: | \[{7^{648}-1\over6}\] | 25 × 34 × 52 × 13 × 19 × 37 × 43 × 73 × 109 × 163 × 181 × 193 × 409 × 487 × 811 × 1063 × 1201 × 1297 × 1621 × 2377 × 3727 × 15877 × 26893 × 33049 × 40177 × 42409 × 52813 × 117307 × 137089 × 2583253 × 3368791 × 7821361 × 13841169553<11> × 32952799801<11> × 167039577217<12> × 317328896377<12> × 590297313273013<15> × 1628413557556843<16> × 6115477804490161<16> × 60922880584567163834041<23> × 70722308812401674174993533367023<32> × 2872770591829080828336687857571193<34> × 3426171911854086574033958308360873411<37> × 1014304878550049872789378739173765597506720573117564274994518656337<67> × 1746862678278527867512519557726668385585066544061549202201094442029<67> × 106482000039759511363648676715205238439918162240846701484538335541684175359480754042111537191897<96> |