We know the following: $$\gamma=\lim_{n\to\infty }\left(\sum_{k=1}^n\frac{1}{k}-\ln(n)\right)$$ This could be the good candidate for renormalized sum of $\left(\sum_{k=1}^{\infty}\frac{1}{k}\right)$. Also, we know the following: $$-\gamma=\lim_{n\to\infty }\left(\sum_{p\leq n}\frac{\ln(p)}{p-1}-\ln(n)\right)$$ I want to ask does this analogously mean that $-\gamma$ is renormalized value of $(\sum_{p}\frac{\ln(p)}{p-1})$? Also, I wanted to ask similar question: What is the renormalized value of the following sums ? i.e. is there a way we could assign finite values to following sums sums? 1.$$\sum_{p} \frac{1}{\sqrt{cp}-1}$$ 2.$$\sum_{p} \frac{\ln(p)}{\sqrt{cp}-1}$$ Here $c$ is a constant. ( I'm particularly interested in two cases where c=1 and c= e)