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MathNet 2022-part-01 — 197 problems (EN–VI) Question 174

Math Olympiad Vault · MathNet 2022-part-01 — 197 problems (EN–VI)

Question 174

Find all prime numbers $p$ and positive integers $a, b, c$ such that
$$
2^a p^b = (p + 2)^c + 1.
$$