Base 15 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 561: | \[{15^{561}-1\over14}\] | 67 × 103 × 241 × 463 × 1123 × 2333 × 8537 × 1022449 × 3496561 × 17744057 × 1045002649 × 6734509609<10> × 39720135181<11> × 62475406423<11> × 577183593361<12> × 4969143820807<13> × 260023469773321<15> × 1191705536563374229<19> × 3916703999765344129<19> × 97406069823939953821<20> × 10506425474462260337063983<26> × 7720616859833014920244488148559526650319156453154610617626507282349907796702605429692105538461207118232246612527035805386213820728843324699199716097<148> × [83385163655213204649039002805387176295446941121699389524653230525139566578902867862725483455255064120404393813965167370440971853563514380311616919558923546930167932141729468452944692821244931901505237910941058387590264335060398180611254108046042644853693813902431305265297735558709779716736921029519393972424943<311>] |