A272028 Decimal expansion of Product_{p prime} (1+1/p)^(1/p), an infinite product considered and computed by Marc Deléglise.

1, 4, 6, 8, 1, 9, 1, 1, 2, 2, 3, 2, 2, 9, 9, 3, 7, 8, 1, 0, 7, 9, 1, 0, 1, 7, 5, 5, 6, 5, 5, 5, 5, 4, 8, 6, 1, 9, 2, 1, 8, 2, 3, 3, 4, 3, 1, 3, 3, 0, 1, 5, 1, 9, 6, 6, 9, 8, 3, 3, 2, 9, 4, 0, 7, 1, 2, 5, 1, 1, 1, 4, 9, 8, 4, 7, 2, 0, 9, 5, 7, 2, 4, 9, 4, 4, 2, 4, 4, 2, 3, 4, 6, 9, 4, 9, 2, 7

Offset: 1

Author

Jean-François Alcover, Apr 18 2016

Keywords

• nonn
• cons

Examples

			1.46819112232299378107910175565555486192182334313301519669833294...
		

References

• Steven R. Finch, Mathematical Constants, Cambridge, 2003, Section 2.9 p. 122.

Links

• G. C. Greubel, Table of n, a(n) for n = 1..1000

Crossrefs

Cf. A242623 (same product without restriction to primes).

Programs

Mathematica

digits = 98; Exp[NSum[(-1)^(n-1)*PrimeZetaP[n-1]/(n-2), {n, 3, Infinity}, WorkingPrecision -> digits+10, Method -> "AlternatingSigns"]] // RealDigits[#, 10, digits]& // First