Expected size of the maximal prime gap below x under Hardy-Littlewood conjecture












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Let $ pi_{n}(x) $ denote the number of prime gaps of size $ n $ below $ x $ for even $ n $. The Hardy-Littlewood conjecture predicts that $ pi_{n}(x)sim C_{n}frac{x}{log^{2}x} $ with $ C_{n}=C_{2}prod_{qmid n}frac{(q-1)}{(q-2)} $, $ C_{2}=0.66016... $ is the so called twin prime constant and $ q $ runs among odd primes dividing $ n $. Let $ Q_{a,b}(x) $ be the largest primorial not exceeding $ x^{a}log^{b} x $.



Assuming the conjecture above, can we determine $ a $ and $ b $ so that $ pi_{Q_{a,b}(x)}(x)asymp 1 $ as $ x $ tends to $ infty $?










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    Let $ pi_{n}(x) $ denote the number of prime gaps of size $ n $ below $ x $ for even $ n $. The Hardy-Littlewood conjecture predicts that $ pi_{n}(x)sim C_{n}frac{x}{log^{2}x} $ with $ C_{n}=C_{2}prod_{qmid n}frac{(q-1)}{(q-2)} $, $ C_{2}=0.66016... $ is the so called twin prime constant and $ q $ runs among odd primes dividing $ n $. Let $ Q_{a,b}(x) $ be the largest primorial not exceeding $ x^{a}log^{b} x $.



    Assuming the conjecture above, can we determine $ a $ and $ b $ so that $ pi_{Q_{a,b}(x)}(x)asymp 1 $ as $ x $ tends to $ infty $?










    share|cite|improve this question



























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      1








      1







      Let $ pi_{n}(x) $ denote the number of prime gaps of size $ n $ below $ x $ for even $ n $. The Hardy-Littlewood conjecture predicts that $ pi_{n}(x)sim C_{n}frac{x}{log^{2}x} $ with $ C_{n}=C_{2}prod_{qmid n}frac{(q-1)}{(q-2)} $, $ C_{2}=0.66016... $ is the so called twin prime constant and $ q $ runs among odd primes dividing $ n $. Let $ Q_{a,b}(x) $ be the largest primorial not exceeding $ x^{a}log^{b} x $.



      Assuming the conjecture above, can we determine $ a $ and $ b $ so that $ pi_{Q_{a,b}(x)}(x)asymp 1 $ as $ x $ tends to $ infty $?










      share|cite|improve this question















      Let $ pi_{n}(x) $ denote the number of prime gaps of size $ n $ below $ x $ for even $ n $. The Hardy-Littlewood conjecture predicts that $ pi_{n}(x)sim C_{n}frac{x}{log^{2}x} $ with $ C_{n}=C_{2}prod_{qmid n}frac{(q-1)}{(q-2)} $, $ C_{2}=0.66016... $ is the so called twin prime constant and $ q $ runs among odd primes dividing $ n $. Let $ Q_{a,b}(x) $ be the largest primorial not exceeding $ x^{a}log^{b} x $.



      Assuming the conjecture above, can we determine $ a $ and $ b $ so that $ pi_{Q_{a,b}(x)}(x)asymp 1 $ as $ x $ tends to $ infty $?







      number-theory prime-numbers prime-gaps






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      edited Dec 20 '18 at 10:14









      Klangen

      1,65711334




      1,65711334










      asked Nov 11 '18 at 15:57









      Sylvain JulienSylvain Julien

      1,122918




      1,122918






















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