254911domain: NPropertiesPrimalityPrimeyesAppears in sequencesNumber of symmetric n X n (0,1)-matrices over the reals with zero permanent.at n=5A118989Sixth prime p such that (p+n)^2+n is prime but (p+j)^2+j is not prime for all 0<j<n.at n=28A238678Prime numbersat n=22429