Base 7 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 279: | \[{7^{279}-1\over6}\] | 32 × 19 × 37 × 311 × 1063 × 21143 × 5463751 × 2211164386353499<16> × 3999088279399464409<19> × 36148617745189465516342817701<29> × 8248454734032306396350042707176588234070405742014804291507291<61> × 15849172926843517537434671961543993863907901060357318207754249397778671924792284400067541539<92> |