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Primes congruent to 49 mod 53.
1

%I #9 Sep 08 2022 08:45:36

%S 367,1109,1321,1427,2063,2381,2593,2699,3229,3547,4289,5879,6091,6197,

%T 6833,7151,7681,8317,8423,8741,9059,9377,9907,10331,10861,11497,12239,

%U 12451,13723,13829,14783,15101,15313,15737,16267,16691,16903,17327,17539,18493

%N Primes congruent to 49 mod 53.

%H Vincenzo Librandi, <a href="/A142579/b142579.txt">Table of n, a(n) for n = 1..1000</a>

%F a(n) ~ 52n log n. - _Charles R Greathouse IV_, Jul 04 2016

%t Select[Prime[Range[2600]], MemberQ[{49}, Mod[#, 53]] &] (* _Vincenzo Librandi_, Aug 30 2012 *)

%o (Magma) [p: p in PrimesUpTo(20000) | p mod 53 eq 49]; // _Vincenzo Librandi_, Ayg 30 2012

%o (PARI) is(n)=isprime(n) && n%53==49 \\ _Charles R Greathouse IV_, Jul 04 2016

%Y Cf. A000040.

%K nonn,easy

%O 1,1

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