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2026_04_08_alexeev_putterman_sawhney_sellke_valiant: Theorem 6.1 of Alexeev, Putterman, Sawhney, Sellke and Valiant: for each fixed a at least 1 only finitely many n have n minus a k squared prime for every k coprime to n with a k squared below n; a = 1 answers Problem 1141.
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