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A045452 Primes congruent to {4, 5} mod 7. 1

%I #12 Sep 08 2022 08:44:56

%S 5,11,19,47,53,61,67,89,103,109,131,137,151,173,179,193,229,257,263,

%T 271,277,313,347,383,389,397,431,439,467,487,509,523,557,571,593,599,

%U 607,613,641,677,683,691,719,733

%N Primes congruent to {4, 5} mod 7.

%H Vincenzo Librandi, <a href="/A045452/b045452.txt">Table of n, a(n) for n = 1..1000</a>

%t Select[Prime[Range[200]],MemberQ[{4,5},Mod[#,7]]&] (* _Vincenzo Librandi_, Aug 13 2012 *)

%t Select[Flatten[{#+4,#+5}&/@(7*Range[0,150])],PrimeQ] (* _Harvey P. Dale_, Dec 27 2021 *)

%o (Magma) [ p: p in PrimesUpTo(1000) | p mod 7 in {4, 5} ]; // _Vincenzo Librandi_, Aug 13 2012

%Y Cf. A000040.

%K nonn,easy

%O 1,1

%A _N. J. A. Sloane_

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Last modified June 23 14:31 EDT 2024. Contains 373651 sequences. (Running on oeis4.)