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MathNet 2001 — Part 01 Question 78

Math Olympiad Vault · MathNet 2001 — Part 01

Question 78

Consider the equation
$$
x^{2001} = y^{x}.
$$


a. Determine all $(x, y)$ pairs of solutions in which $x$ is a prime number and $y$ is a positive integer.


b. Determine all pairs $(x, y)$ of solutions in which $x$ and $y$ are positive integers.

(Remember that $2001 = 3 \cdot 23 \cdot 29$)