Until a better answer appears. Here is a link:
http://mathworld.wolfram.com/PrimeSums.html
It says that
$$s(p_n) \tilde \quad n^2 \log n /2.$$$$s(p_n) \sim \; n^2 \log n /2.$$
where $p_n$ is the $n$-th prime.
Perhaps you want to look at the reference, and figure out if you can make the bound effective.