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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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Claims
2025_01_17_cambie: The density of integers whose kth smallest prime factor is p is unimodal in p for k equal to 1, 2 and 3 and not for every k from 4 to 20, so it is not unimodal for every fixed k; the refereed result behind the site's label.
2026_05_08_wang_crapis: Claims that the density of integers whose kth smallest prime factor is p is not unimodal for every k at least 4, completing Cambie's classification; a preprint with a forum endorsement and no refereed publication.
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