The Heath-Brown-Moroz constant is defined by
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(1)
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(2)
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(OEIS A118228), where the product is taken over the primes 
.
Heath-Brown-Moroz Constant
See also
Artin's Constant, Barban's Constant, Feller-Tornier Constant, Murata's Constant, Prime Products, Quadratic Class Number Constant, Sarnak's Constant, Taniguchi's Constant, Twin Primes ConstantExplore with Wolfram|Alpha
References
Finch, S. R. Mathematical Constants. Cambridge, England: Cambridge University Press, p. 106, 2003.Heath-Brown, D. R. and Moroz, B. Z. "The Density of Rational Points on the Cubic Surface
."
Math. Proc. Cambridge Philos. Soc. 125, 385-395, 1999.Niklasch,
G. "Some Number-Theoretical Constants." http://www.gn-50uma.de/alula/essays/Moree/Moree.en.shtml.Sloane,
N. J. A. Sequence A118228 in "The
On-Line Encyclopedia of Integer Sequences."
Cite this as:
Weisstein, Eric W. "Heath-Brown-Moroz Constant." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/Heath-Brown-MorozConstant.html