149213domain: NPropertiesPrimalityPrimeyesAppears in sequencesMiddle of 3 consecutive prime numbers such that p1*p2*p3+d1+d2+1=average of twin prime pairs, d1(delta)=p2-p1,d2(delta)=p3-p2.at n=23A153407Primes of the form 7n^2 + 1.at n=32A201602Primes p such that (p^1024 + 1)/2 is prime.at n=19A341272Prime numbersat n=13780