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A142215 Primes congruent to 18 mod 41. 1

%I #15 Sep 08 2022 08:45:36

%S 59,223,797,1289,1453,1699,2027,2273,2437,2683,3011,3257,4159,4241,

%T 4651,4733,5471,5717,5881,6373,6619,6701,6947,7193,7603,8423,8669,

%U 9161,9817,10391,10883,11047,11621,11867,12113,12277,13999,14081,14327,14737,14983

%N Primes congruent to 18 mod 41.

%H Vincenzo Librandi, <a href="/A142215/b142215.txt">Table of n, a(n) for n = 1..1000</a>

%F a(n) ~ 40n log n. - _Charles R Greathouse IV_, Jul 03 2016

%t Select[Range[18,30000,41],PrimeQ] (* _Vladimir Joseph Stephan Orlovsky_, Jun 03 2011 *)

%t Select[Prime[Range[5000]],MemberQ[{18},Mod[#,41]]&] (* _Vincenzo Librandi_, Aug 23 2012 *)

%o (Magma) [p: p in PrimesUpTo(16000) | p mod 41 eq 18 ]; // _Vincenzo Librandi_, Aug 23 2012

%o (PARI) is(n)=isprime(n) && n%41==18 \\ _Charles R Greathouse IV_, Jul 03 2016

%Y Cf. A000040, A142214.

%K nonn,easy

%O 1,1

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

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Last modified April 25 09:07 EDT 2024. Contains 371964 sequences. (Running on oeis4.)