Base 15 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 612: | \[{15^{612}-1\over14}\] | 25 × 13 × 19 × 37 × 103 × 113 × 137 × 211 × 241 × 307 × 409 × 443 × 541 × 613 × 739 × 811 × 1123 × 3877 × 21061 × 29173 × 712573 × 1022449 × 2199529 × 3496561 × 975826351 × 1045002649 × 3395062589 × 6734509609<10> × 224577900649<12> × 1529065687447<13> × 3506657472973<13> × 101462866544971<15> × 783394142968369<15> × 425171096278165981<18> × 608605859277144821<18> × 97406069823939953821<20> × 6432782079513712743495779579521<31> × 46006622624003587144520612100176336641<38> × 710631272168727982894395295277759599175209<42> × 182883374648164818705985733353475517551453564759950328016451505276621281081<75> × 467917890696673262774021250072164203277176206992372823128083834714568449340071<78> × [10521103726790661045080604762202814451503749304020025667573182292835689810363576842959663771217526145881887056244362290962646327016496899429753749071333939562950110931341534175893100851466447328617801148567595362148316045677<224>] |