Question 147
Find all pairs of positive integers $(m, n)$ that satisfy the equation
$$
m! + n! = m^n + 1.
$$
$$
m! + n! = m^n + 1.
$$
MathNet 2019-part-07 — 184 problems (EN–VI) Question 147
Math Olympiad Vault · MathNet 2019-part-07 — 184 problems (EN–VI)