Base 15 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 252: | \[{15^{252}-1\over14}\] | 25 × 7 × 13 × 19 × 29 × 37 × 43 × 113 × 127 × 211 × 241 × 541 × 739 × 811 × 883 × 1009 × 2521 × 3361 × 3877 × 21061 × 123229 × 327517 × 399043 × 723031 × 1743463 × 10137331 × 10678711 × 48675439 × 191354311 × 1470374630929<13> × 2817034275427<13> × 3506657472973<13> × 4454215139669<13> × 269297040407347<15> × 15360796671433620373<20> × 4427723399014411115015445589<28> × 1875455130200235110896075405835043625046616623130783410935778570873930737121209<79> |