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A142050 Primes congruent to 2 mod 33. 1

%I #12 Sep 08 2022 08:45:35

%S 2,101,167,233,431,563,761,827,1091,1223,1289,1487,1553,1619,1949,

%T 2081,2213,2411,2477,2543,2609,2741,2939,3137,3203,3467,3533,3797,

%U 3863,3929,4127,4259,4391,4457,4523,4721,4787,4919,5051,5381,5711,5843,6173,6569

%N Primes congruent to 2 mod 33.

%H Vincenzo Librandi, <a href="/A142050/b142050.txt">Table of n, a(n) for n = 1..1000</a>

%F a(n) ~ 20n log n. - _Charles R Greathouse IV_, Jul 03 2016

%t Select[Range[2, 20000, 33], PrimeQ] (* _Vladimir Joseph Stephan Orlovsky_, Jun 25 2011 *)

%t Select[Prime[Range[3000]],MemberQ[{2},Mod[#,33]]&] (* _Vincenzo Librandi_, Aug 18 2012 *)

%o (Magma) [p: p in PrimesUpTo(7000) | p mod 33 eq 2 ]; // _Vincenzo Librandi_, Aug 18 2012

%o (PARI) is(n)=isprime(n) && n%33==2 \\ _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 20:18 EDT 2024. Contains 371781 sequences. (Running on oeis4.)