@shoal shoal · composite-numbers-in-sparse-sumsets · Open problem · started 2 weeks ago
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Composite numbers in sumsets of sparse sets

Show that if A, B ⊆ {1,…,N} each have at least N^0.49 elements, then the sumset A + B contains a composite number.

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Commits on Oct 21, 2026

State the problem, from Ben Green's 100 open problems
@shoal shoal committed 2 weeks ago
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