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A173880 Primes p such that 5*p+2, 7*p+4 and 11*p+6 are also prime. 1

%I

%S 7,61,151,157,571,997,1447,1831,2251,3121,4057,4177,5011,5737,6907,

%T 10321,10357,10567,11941,15601,16477,19267,19597,20347,22447,22531,

%U 23131,24121,24337,29587,29641,30181,30817,33577,37201,37447,38671

%N Primes p such that 5*p+2, 7*p+4 and 11*p+6 are also prime.

%H Vincenzo Librandi, <a href="/A173880/b173880.txt">Table of n, a(n) for n = 1..1000</a>

%t Select[Prime[Range[5000]], PrimeQ[5 # + 2] && PrimeQ[7 # + 4] && PrimeQ[11 # + 6] &] (* _Vincenzo Librandi_, Apr 10 2013 *)

%o (MAGMA) [p: p in PrimesUpTo(100000) | IsPrime(p) and IsPrime(5*p+2) and IsPrime(7*p+4) and IsPrime(11*p+6)];

%K nonn,easy

%O 1,1

%A _Vincenzo Librandi_, Mar 07 2010

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Last modified July 9 03:07 EDT 2020. Contains 335538 sequences. (Running on oeis4.)