Base 15 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 168: | \[{15^{168}-1\over14}\] | 26 × 7 × 13 × 17 × 29 × 43 × 113 × 211 × 241 × 1489 × 3361 × 3877 × 327517 × 723031 × 1743463 × 10123513 × 10678711 × 191354311 × 2562840001 × 725177029417<12> × 766028506097<12> × 2817034275427<13> × 4454215139669<13> × 21975395880100433<17> × 15360796671433620373<20> × 38602348691025427791666546447549336481<38> |