622813domain: NPropertiesPrimalityPrimeyesAppears in sequencesWhere the prime race 4k-1 vs. 4k+1 changes leader.at n=11A007350Primes p for which pi_{4,3}(p) - pi_{4,1}(p) = -1, where pi_{m,a}(x) is the number of primes <= x which are congruent to a (mod m).at n=18A051025Prime numbersat n=50822