prime zeta function
Assuming "prime" is a Wolfram Language symbol | Use the input as or instead

Input interpretation

Prime (Wolfram Language symbol) | Zeta (Wolfram Language symbol)

Usage

Prime

Prime[n] gives the n ^th prime number pn.

Zeta

Zeta[s] gives the Riemann zeta function ζ (s). 
Zeta[s, a] gives the generalized Riemann zeta function ζ (s, a).