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Research notes on every problem, and a library of the papers behind them. Built from the open erdos repository.

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2026_05_29_chojecki: A note posted by Przemek Chojecki, with its argument from GPT-5.5 Pro, claims an unconditional negative answer from a fixed-B covering construction and the divisor propositions of the GRH-conditional first version.

2026_06_30_bui_naprienko_pratt_zaharescu: Bui, Naprienko, Pratt and Zaharescu find infinitely many binomial coefficients with no divisor in an interval (cn, n] whose c tends to zero, so no fixed constant works.