Base 15 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 296: | \[{15^{296}-1\over14}\] | 26 × 17 × 113 × 149 × 223 × 593 × 1489 × 4441 × 3052649 × 32217011 × 5928049943<10> × 2474070455887<13> × 29645965890637091<17> × 52987400285765657<17> × 582492120825067581276282544339<30> × 16882057614458789568659053197037<32> × 35633663309671050205838163789123961<35> × 790740515080686549571624870372251292920742662291628160056576539409<66> × 9428049697013105994262869021832804987303493262811165189526829357153920818133439689327399438985161<97> |