Base 7 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 388: | \[{7^{388}-1\over6}\] | 24 × 52 × 389 × 971 × 79153 × 599599487 × 11695740049349<14> × 146533138940077<15> × 101761712426028087493813409017<30> × 5682612984161495984352311495269241<34> × 13415991946479937907161852774776273092954672228563925519099<59> × 4160924156784953821413999107825795646911807584554735726748631757909547764679<76> × 3322172551314376232138567000961500096409059258253885638318053320936174431744975533<82> |