75389domain: NPropertiesPrimalityPrimeyesAppears in sequencesSophie Germain primes in A154939.at n=33A154941Values k(i) such that k(i) + k(i+3) = k(i+1) + k(i+2), where k(i) is A022885(i).at n=20A235725Ninth prime p such that (p+n)^2+n is prime but (p+j)^2+j is not prime for all 0<j<n.at n=33A238681Prime numbersat n=7428