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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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1992_11_01_hall: Hall proves that the density of integers with a divisor d > 1, d congruent to 1 modulo m, below exp(m^alpha) tends to 0 for alpha < 1/log 2 and to 1 for alpha > 1/log 2, so the threshold Erdős conjectured exists.
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