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MathNet 2023-part-04 — 191 problems (EN–VI) Question 157

Math Olympiad Vault · MathNet 2023-part-04 — 191 problems (EN–VI)

Question 157

Determine all prime numbers $p, q \lt 2023$ such that $q \mid p^2 + 8$ and $p \mid q^2 + 8$.