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A123987 Numbers k for which 14*k+1, 14*k+5, 14*k+11 and 14*k+13 are primes. 1

%I #10 Mar 28 2020 04:28:05

%S 9,72,114,237,252,279,342,357,417,534,687,864,1134,1284,1362,1644,

%T 2637,2754,2802,3144,3162,3849,5427,6342,6429,6774,7122,8082,8742,

%U 9114,9234,9597,9897,10029,10059,10119,10212,11229,11562,12594,13107,14202,14799

%N Numbers k for which 14*k+1, 14*k+5, 14*k+11 and 14*k+13 are primes.

%H Amiram Eldar, <a href="/A123987/b123987.txt">Table of n, a(n) for n = 1..10000</a>

%t Select[Range[15000], And @@ PrimeQ /@ ({1, 5, 11, 13} + 14#) &] (* _Ray Chandler_, Dec 06 2006 *)

%K nonn

%O 1,1

%A _Artur Jasinski_, Oct 30 2006

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Last modified July 25 14:52 EDT 2024. Contains 374611 sequences. (Running on oeis4.)