MathDB
TOT 254 1990 Spring O S2 n =4k+1 , exist n odds whose sum = product

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June 8, 2024
number theory

Problem Statement

Prove that (a) if the natural number nn can be represented as n=4k+1n =4k+1 (where kk is an integer), then there exist nn odd positive integers whose sum is equal to their product, (b) if nn cannot be represented in this form then such a set does not exist.
(M. Kontsevich)