OFFSET
0,1
REFERENCES
Steven R. Finch, Mathematical Constants, Cambridge University Press, 2003, Section 5.5 Kalmar's composition constant, p. 293.
LINKS
Eric Weisstein's MathWorld, Prime Zeta function
EXAMPLE
0.41277323709367...
MATHEMATICA
digits = 30; eta = x /. FindRoot[PrimeZetaP[x] == 1, {x, 7/5}, WorkingPrecision -> digits + 200]; c = N[1/(eta*PrimeZetaP'[eta]) // Re, digits + 200]; RealDigits[c, 10, digits ] // First (* updated Sep 11 2015 *)
CROSSREFS
KEYWORD
AUTHOR
Jean-François Alcover, Jun 06 2014
STATUS
approved