37517domain: NPropertiesPrimalityPrimeyesAppears in sequencesPositive numbers y such that y^2 is of the form x^2+(x+73)^2 with integer x.at n=12A160041Primes p such that phi(p+1) = phi(phi(p-1)+1).at n=9A271655Primes equal to a centered pentagonal number plus 1.at n=22A285810Prime numbersat n=3972