  For a positive integer $n$, we denote by $F(n)$ the distance from $n$ to the
nearest prime number. We prove that every sufficiently large positive integer
$N$ can be represented as the sum $N=n_1+n_2$, where $$ F(n_i) \geqslant (\log
N)(\log\log N)^{1/325565}, $$ for $i=1,2$. This improves the corresponding
"trivial" statement where only $F(n_i)\gg \log N$ is required.
