8194651domain: NPropertiesPrimalityPrimeyesAppears in sequencesPrimes p1 such that, with p2, p3, p4 the next three primes, p1*p2+p3*p4+p1, p1*p2+p3*p4+p2, p1*p2+p3*p4+p3 and p1*p2+p3*p4+p4 are all prime.at n=24A340126Prime numbersat n=551975