# Requesting for details of Grun's result on odd perfect numbers

This post is an offshoot of this earlier MSE question.

Grun $1952$ proved that the smallest prime factor $p_1$ (of an odd perfect number $N$) is $< \frac{2\omega(N)}{3} + 2$ (where $\omega(N)$ is the number of distinct prime factors of $N$), and Perisastri $1958$ published the same result.