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MathNet 2016-part-04 — 184 problems (EN–VI) Question 91

Math Olympiad Vault · MathNet 2016-part-04 — 184 problems (EN–VI)

Question 91

Find all non-negative integers $n$ so that $n^2 - 4n + 2$, $n^2 - 3n + 13$ and $n^2 - 6n + 19$ are simultaneously primes.