12687119domain: NPropertiesPrimalityPrimeyesAppears in sequencesInitial prime in set of (at least) 4 consecutive primes in arithmetic progression with difference 30.at n=25A052243First of three consecutive primes p,q,r such that p+q-r, p-q+r, -p+q+r are all prime.at n=18A351054Prime numbersat n=830145