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Prime-counting function
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==The Riemann hypothesis== The [[Riemann hypothesis]] implies a much tighter bound on the error in the estimate for {{math|''Ο''(''x'')}}, and hence to a more regular distribution of prime numbers, :<math>\pi(x) = \operatorname{li}(x) + O(\sqrt{x} \log{x}).</math> Specifically,<ref>{{Cite journal | last1=Schoenfeld | first1=Lowell |author-link=Lowell Schoenfeld| title=Sharper bounds for the Chebyshev functions ''ΞΈ''(''x'') and ''Ο''(''x''). II | doi=10.2307/2005976 | mr=0457374 | year=1976 | journal=[[Mathematics of Computation]] | issn=0025-5718 | volume=30 | issue=134 | pages=337β360 | jstor=2005976 | publisher=American Mathematical Society}}</ref> :<math>|\pi(x) - \operatorname{li}(x)| < \frac{\sqrt{x}}{8\pi} \, \log{x}, \quad \text{for all } x \ge 2657. </math> {{harvtxt|Dudek|2015}} proved that the Riemann hypothesis implies that for all {{math|''x'' β₯ 2}} there is a prime {{mvar|p}} satisfying :<math>x - \frac{4}{\pi} \sqrt{x} \log x < p \leq x.</math>
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