Primesmedium
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A prime p satisfies p ≡ 3 (mod 4) and p | (a² + 1). What does this tell us about p?
A prime p satisfies p ≡ 3 (mod 4) and p | (a² + 1). What does this tell us about p?
A prime p satisfies p ≡ 3 (mod 4) and p | (a² + 1). What does this tell us about p?