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A118484 Primes p such that the nearest integer to p * gamma is prime, where gamma is Euler's constant. 2

%I #11 Jun 15 2013 01:51:37

%S 3,5,19,23,29,53,71,103,127,137,179,227,241,283,313,331,397,487,491,

%T 601,647,709,751,761,809,829,881,937,947,1051,1069,1093,1229,1259,

%U 1301,1319,1381,1423,1433,1453,1489,1571,1579,1609,1693,1787,1789,1901,1997,2029

%N Primes p such that the nearest integer to p * gamma is prime, where gamma is Euler's constant.

%H Vincenzo Librandi, <a href="/A118484/b118484.txt">Table of n, a(n) for n = 1..1000</a>

%t lst={};Do[p=Prime[n];If[PrimeQ[Round[p*EulerGamma]],AppendTo[lst,p]],{n,10^3}];lst

%K nonn,easy

%O 1,1

%A _Vladimir Joseph Stephan Orlovsky_, Aug 25 2008

%E Edited by _Charles R Greathouse IV_, Nov 11 2009

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Last modified September 4 09:09 EDT 2024. Contains 375681 sequences. (Running on oeis4.)