74419domain: NPropertiesPrimalityPrimeyesAppears in sequencesPrimes p such that 2*p^4-+15 are also prime.at n=31A174366Primes of the form 5n^2 - 1.at n=30A201783Standard Jacobi primes.at n=17A275878Numbers in a hexagonal tiling (seen as concentric rings) which have exactly three neighbors whose difference from it is prime.at n=38A372223Prime numbersat n=7342