Base 16 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 215: | \[{16^{215}-1\over15}\] | 5 × 11 × 31 × 41 × 173 × 431 × 1721 × 9719 × 101653 × 129001 × 370661 × 500177 × 1952201 × 2099863 × 9084611 × 731516431 × 4538991421<10> × 514851898711<12> × 1759217765581<13> × 2932031007403<13> × 260125854015641<15> × 1401345270171101<16> × 297927289744047764444862191<27> × 59904608378705661377430182608711698924130721<44> × 1131832377932535124189124787988905860893840561<46> |