Base 15 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 270: | \[{15^{270}-1\over14}\] | 24 × 11 × 19 × 31 × 61 × 109 × 181 × 211 × 241 × 271 × 541 × 739 × 811 × 991 × 1531 × 4931 × 19231 × 21061 × 47701 × 54001 × 117991 × 142111 × 2568061 × 16354441 × 39225301 × 238123801 × 258036340231<12> × 829049498029<12> × 19702654674841<14> × 138711479680351<15> × 5105451444569239321<19> × 1477891879996957031251<22> × 71737624565417897330341231<26> × 92978587355640205970336221<26> × 149252911437639913512753659911706881<36> × 199163133217862162773842455856459620733246841<45> |