Erdős Problem 981

### What is the conjecture

https://www.erdosproblems.com/981

Let $\epsilon>0$ and $f_\epsilon(p)$ be the smallest integer $m$ such that $\sum_{n\leq m}
\left(\frac{n}{p}\right)<\epsilon m$. Prove that
$$\sum_{p0$.

Status: solved

### Choose either option
- [ ] I plan on working on this conjecture
- [x] This issue is up for grabs: I would like to see this conjecture added by somebody else

Read the conjecture at https://www.erdosproblems.com/981 and inspect the formal-conjectures repository for existing Erdős problem entries and contribution conventions. No file or test is named in the issue; done means adding a Lean formalization of the stated conjecture that fits the repository and compiles.

Written by the indexing model from the issue text.