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A142530 Primes congruent to 49 mod 52. 1

%I #11 Sep 08 2022 08:45:36

%S 101,257,569,673,829,881,1193,1297,1453,1609,1973,2129,2389,2441,2753,

%T 2857,2909,3169,3221,3533,3637,3793,4001,4157,4261,4729,4937,5197,

%U 5717,5821,6029,6133,6653,7069,7121,7433,7537,7589,7901,8161,8317,8369,8629,8681

%N Primes congruent to 49 mod 52.

%H Vincenzo Librandi, <a href="/A142530/b142530.txt">Table of n, a(n) for n = 1..1000</a>

%F a(n) ~ 24n log n. - _Charles R Greathouse IV_, Jul 03 2016

%t Select[Prime[Range[1300]], MemberQ[{49}, Mod[#, 52]] &] (* _Vincenzo Librandi_, Aug 29 2012 *)

%t Select[Range[49,9000,52],PrimeQ] (* _Harvey P. Dale_, May 21 2021 *)

%o (Magma) [p: p in PrimesUpTo(10000) | p mod 52 eq 49]; // _Vincenzo Librandi_, Aug 29 2012

%o (PARI) is(n)=isprime(n) && n%52==49 \\ _Charles R Greathouse IV_, Jul 03 2016

%Y Cf. A000040.

%K nonn,easy

%O 1,1

%A _N. J. A. Sloane_, Jul 11 2008

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Last modified March 29 11:14 EDT 2024. Contains 371278 sequences. (Running on oeis4.)