1785337domain: NPropertiesPrimalityPrimeyesAppears in sequencesCoefficient of x in the reduction by x^2->x+1 of the polynomial p(n,x) defined below in Comments.at n=25A192755Septic hyperartiads: septic artiads (A270800) for which 7 is a 7th power residue.at n=28A270801Prime numbersat n=134050