Base 15 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 222: | \[{15^{222}-1\over14}\] | 24 × 211 × 223 × 241 × 593 × 4441 × 9769 × 15541 × 32217011 × 76736743 × 5928049943<10> × 2368040427829<13> × 2474070455887<13> × 29645965890637091<17> × 661198877270593946341<21> × 582492120825067581276282544339<30> × 8985671723916697159306375206873223170546534131329363<52> × 138230106260357141123011143895864785781918850554089462164652437196169<69> |