Base 15 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 302: | \[{15^{302}-1\over14}\] | 24 × 907 × 2417 × 7853 × 539366051533252310579<21> × 8751090774771560578063<22> × 13716236852203572392413762222405767421<38> × 2889302310655855764861639192051053019016997786428462657292911<61> × 6132423990170718935497151345716395439998744308502131623764892644270049443642781<79> × 3418115629678457088247429676637935888937605379466632928476624876709425479550019437427939675334461251974186511242206688062619<124> |