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A118420 Indices of Glaisher-primes: values n such that the concatenation of the first n decimal digits of the Glaisher-Kinkelin constant is prime. 2
7, 10, 18, 64, 71, 527, 1992, 5644, 8813, 19692 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..10.

Eric Weisstein's World of Mathematics, Constant Primes

Eric Weisstein's World of Mathematics, Glaisher-Kinkelin Constant Digits

Eric Weisstein's World of Mathematics, Integer Sequence Primes

EXAMPLE

A = 1.282427129100622636..., 1282427--the concatenation of the first 7 decimal digits--is prime, so a(1)=7.

CROSSREFS

Cf. A074962, A118419.

Sequence in context: A124187 A328117 A155027 * A196939 A038211 A122226

Adjacent sequences:  A118417 A118418 A118419 * A118421 A118422 A118423

KEYWORD

nonn,more,base

AUTHOR

Eric W. Weisstein, Apr 27 2006

EXTENSIONS

a(10) = 19692 from Eric W. Weisstein, Apr 29 2006

Edited by Charles R Greathouse IV, Apr 27 2010

STATUS

approved

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Last modified October 15 15:03 EDT 2019. Contains 328030 sequences. (Running on oeis4.)