Question 96
Find all pairs $(n; m)$ of positive integers $n$ and $m$ satisfying the equality
$$
n! + 505 = m^2.
$$
$$
n! + 505 = m^2.
$$
MathNet 2015-part-01 — 191 problems (EN–VI) Question 96
Math Olympiad Vault · MathNet 2015-part-01 — 191 problems (EN–VI)