105907domain: 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=27A153404Primes of the form 7n^2 + 4.at n=29A201605Prime numbersat n=10097