Base 15 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 210: | \[{15^{210}-1\over14}\] | 24 × 7 × 11 × 31 × 43 × 61 × 71 × 211 × 241 × 421 × 1531 × 4931 × 19231 × 142111 × 723031 × 1743463 × 4167731 × 10678711 × 39225301 × 191354311 × 497638891 × 2817034275427<13> × 36083117529286469251<20> × 53096945644422356461<20> × 14248663932290065014093421<26> × 24596480723711374110433501<26> × 44302140197578717455741337921<29> × 12340745958492257916284855626741<32> |