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A046138 p, p+6 and p+8 are primes. 6

%I

%S 5,11,23,53,101,131,173,191,233,263,563,593,653,821,1013,1223,1283,

%T 1481,1601,1613,1871,2081,2333,2543,2963,3251,3323,3461,3533,3761,

%U 3911,3923,4013,4211,4253,4643,4793,5003,5273,5471,5651,5843,5861,6263,6353,6563

%N p, p+6 and p+8 are primes.

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

%F A023201 INTERSECT A023202. - _R. J. Mathar_, Jan 23 2009

%p for a from 3 by 2 to 10000 do

%p if `and`(isprime(a), isprime(a+6), isprime(a+8)) then print(a); end if;

%p end do; # _Matt C. Anderson_, Jul 24 2015

%t Select[Range@ 6000, AllTrue[{#, # + 6, # + 8}, PrimeQ] &] (* _Michael De Vlieger_, Jul 24 2015, Version 10 *)

%o (MAGMA) [p: p in PrimesUpTo(10^4)| IsPrime(p+6) and IsPrime(p+8)]; // _Vincenzo Librandi_, Jul 26 2015

%o (Perl) use ntheory ":all"; say for sieve_prime_cluster(0,1e5, 6,8); # _Dana Jacobsen_, Oct 17 2017

%K nonn

%O 1,1

%A _Eric W. Weisstein_

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Last modified May 10 04:35 EDT 2021. Contains 343748 sequences. (Running on oeis4.)