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MathNet 2022-part-02 — 197 problems (EN–VI) Question 24

Math Olympiad Vault · MathNet 2022-part-02 — 197 problems (EN–VI)

Question 24

We call a prime number $p$ cute if there exists a prime $q$ so that both $pq - 2$ and $pq + 2$ are also primes. We call $p$ wonderful if both $p$ and $p+2$ are cute primes. Find all wonderful numbers.