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A142402 Primes congruent to 13 mod 48. 1

%I #12 Sep 08 2022 08:45:36

%S 13,61,109,157,349,397,541,733,829,877,1021,1069,1117,1213,1453,1549,

%T 1597,1693,1741,1789,1933,2029,2221,2269,2557,2749,2797,3037,3181,

%U 3229,3373,3469,3517,3613,3709,3853,4093,4621,4813,4861,4909,4957,5101,5197,5437

%N Primes congruent to 13 mod 48.

%H Vincenzo Librandi, <a href="/A142402/b142402.txt">Table of n, a(n) for n = 1..1000</a>

%F a(n) ~ 16n log n. - _Charles R Greathouse IV_, Jul 03 2016

%t Select[Prime[Range[1700]], MemberQ[{13}, Mod[#, 48]] &] (* _Vincenzo Librandi_, Aug 27 2012 *)

%o (Magma) [p: p in PrimesUpTo(6000) | p mod 48 eq 13]; // _Vincenzo Librandi_, Aug 27 2012

%o (PARI) is(n)=isprime(n) && n%48==13 \\ _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 April 18 20:26 EDT 2024. Contains 371781 sequences. (Running on oeis4.)