Base 10 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 640: | \[{10^{640}-1\over9}\] | 11 × 17 × 41 × 73 × 101 × 137 × 271 × 353 × 449 × 641 × 1409 × 3541 × 9091 × 19841 × 27961 × 69857 × 976193 × 1634881 × 1676321 × 5070721 × 5882353 × 6187457 × 18453761 × 1265011073 × 5964848081<10> × 947147262401<12> × 834427406578561<15> × 15343168188889137818369<23> × 19721061166646717498359681<26> × 515217525265213267447869906815873<33> × 349954396040122577928041596214187605761<39> × 15426023502522488030607387700105870831428809697868716409941105675494726401<74> × 99999999999999999999999999999999000000000000000000000000000000009999999999999999999999999999999900000000000000000000000000000001<128> × 648255203187314216731294348378302257298640011105497984364836891560544273730965869701275128505192385103313045785608085474749131564988961668305646333125115974331391224959722001218233601<183> |