Base 15 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 288: | \[{15^{288}-1\over14}\] | 28 × 13 × 17 × 19 × 37 × 73 × 97 × 113 × 211 × 241 × 257 × 541 × 739 × 811 × 1489 × 3169 × 3877 × 7121 × 7489 × 21061 × 24481 × 91297 × 179953 × 1659649 × 338034241 × 964764793 × 1248882721 × 2544790753 × 2562840001 × 3506657472973<13> × 9763752384289<13> × 12779004583099009<17> × 1076233596845085335953<22> × 4871829138071848601730474137089<31> × 7743583876242521223725716887502753<34> × 263313962934440595404544244704389617<36> × 1609838315501786927665277353043429949863642581646748360961<58> |