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A118419 Glaisher-primes: numbers n such that the concatenation of the first n decimal digits of the Glaisher-Kinkelin constant is prime. 1

%I #10 Mar 05 2023 21:28:49

%S 1282427,1282427129,128242712910062263,

%T 1282427129100622636875342568869791727767688927325001192063740021

%N Glaisher-primes: numbers n such that the concatenation of the first n decimal digits of the Glaisher-Kinkelin constant is prime.

%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/ConstantPrimes.html">Constant Primes</a>

%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/Glaisher-KinkelinConstantDigits.html">Glaisher-Kinkelin Constant Digits</a>

%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/IntegerSequencePrimes.html">Integer Sequence Primes</a>

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

%Y Cf. A074962, A118420.

%K nonn,base

%O 1,1

%A _Eric W. Weisstein_, Apr 27 2006

%E Edited by _Charles R Greathouse IV_, Apr 27 2010

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Last modified June 19 13:19 EDT 2024. Contains 373503 sequences. (Running on oeis4.)