266999domain: NPropertiesPrimalityPrimeyesAppears in sequencesPrimes of the form 8*k-1 such that 4*k-1, 16*k-1 and 32*k-1 are also primes.at n=22A101796Double-safe primes which are also double-Sophie Germain primes.at n=7A162019Numbers k such that 431*2^k+1 is prime.at n=35A323031Primes having only {2, 6, 9} as digits.at n=36A385788Prime numbersat n=23395