Twin prime constant C2
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Number
C2
0.660161815846869573927812110014555778432623360284733413319448423335405642304495277143760031413839867911779
Definition
C2:=p3(1(p1)2), where the product ranges over the odd primes p.
Comments
(1)
Let π2(x) denote the number of primes px such that p+2 is also a prime. The first Hardy-Littlewood conjecture implies that π2(x)2C2xlog2x.
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Data properties
Entries are of type: real number