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distinct residues 1elementary proof 1erdos problem 1factorial residues 1prime numbers 1

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math.NT2026

Solution to the Erdos problem on distinct residues of factorials

Vyacheslav M. Abramov

The paper provides an elementary proof that no prime p > 5 has the property that the residues of 2!, 3!, …, …, (p‑1)! modulo p are all distinct, answering Erdos’s question negative…