Base 15 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 306: | \[{15^{306}-1\over14}\] | 24 × 19 × 103 × 137 × 211 × 241 × 307 × 443 × 541 × 739 × 811 × 1123 × 21061 × 1022449 × 2199529 × 3496561 × 975826351 × 1045002649 × 6734509609<10> × 224577900649<12> × 1529065687447<13> × 101462866544971<15> × 783394142968369<15> × 425171096278165981<18> × 97406069823939953821<20> × 46006622624003587144520612100176336641<38> × 182883374648164818705985733353475517551453564759950328016451505276621281081<75> × 467917890696673262774021250072164203277176206992372823128083834714568449340071<78> |