On [Mathoverflow](https://mathoverflow.net/a/410815) user [leechlattice](https://mathoverflow.net/users/125498/leechlattice) shows that $h(n) \ll n^{\frac 2 3}$.

Erdős problem 160

On Mathoverflow user leechlattice shows that $h(n) \ll n^{\frac 2 3}$ .

The source's own material, retained exactly.

4 retained statements36c6d0fef71a

FormalConjectures/ErdosProblems/

160.lean

Retained formal statement3 of 4

On Mathoverflow user leechlattice shows that $h(n) \ll n^{\frac 2 3}$ .

FormalConjectures/ErdosProblems/160.leanErdos160.erdos_160.known_upper1 lineExact file

1(fun n => ↑(Erdos160.erdos_160.h n)) =O[Filter.atTop] fun n => ↑n ^ (2 / 3)

SolvedStatement only, no proof