Base 7 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 489: | \[{7^{489}-1\over6}\] | 3 × 19 × 653 × 9781 × 15649 × 1260643 × 22632877 × 66133452648085219<17> × 962207945014470392304193<24> × 29180066944965316798822826065275640622225863<44> × 1648536343690282975764489383562678396141955057<46> × 7354840357696348186997141461981606470291584313584199443<55> × 541743184205349189759454266489034009131218017725439286677<57> × 1053228415065366137009779522975011472914727971501057404074151711679319<70> × 14290134984480145836373110578919118843679063098146268533703080116569951196683<77> |