1363679domain: NPropertiesPrimalityPrimeyesAppears in sequencesPrimes of the form 16*k-1 such that 4*k-1, 8*k-1, 32*k-1 and 64*k-1 are also primes.at n=7A101997Double-safe primes which are also double-Sophie Germain primes.at n=17A162019Prime numbersat n=104521