On the density of primes of the form $X^2+c$

Marc Wolf, François Wolf

We present a method for finding large fixed-size primes of the form $X^2+c$. We study the density of primes on the sets $E_c=\{N(X,c)=X^2+c,X\in (2\mathbb{Z}+(c-1))\}$, $c \in…