2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/121350We study primitive divisors of terms of the sequence P_n=n^2+b, for a fixed integer b which is not a negative square. It seems likely that the number of terms with a primitive divisor has a natural density. This seems to be a difficult problem. We survey some results about divisors of this sequence as well as provide upper and lower growth estimates for the number of terms which have a primitive divisor.15 page preprintNumber Theory11A41, 11B32, 11N36text