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A142943 Primes congruent to 41 mod 64. 2

%I #14 Sep 08 2022 08:45:37

%S 41,233,617,809,937,1129,1193,1321,2089,2153,2281,2473,2729,2857,3049,

%T 3433,3881,4073,4201,4457,4649,4969,5417,5737,5801,6121,6569,6761,

%U 7529,8233,8297,8681,9001,9257,9769,9833,10601,10729,11113,11177,11369,11497,11689

%N Primes congruent to 41 mod 64.

%H Vincenzo Librandi, <a href="/A142943/b142943.txt">Table of n, a(n) for n = 1..1000</a>

%F a(n) ~ 32n log n. - _Charles R Greathouse IV_, Jul 03 2016

%t Select[Prime[Range[1800]], MemberQ[{41}, Mod[#, 64]] &] (* _Vincenzo Librandi_, Sep 07 2012 *)

%t Select[Range[41,12000,64],PrimeQ] (* _Harvey P. Dale_, Oct 02 2015 *)

%o (Magma) [p: p in PrimesUpTo(12000) | p mod 64 eq 41 ]; // _Vincenzo Librandi_, Sep 07 2012

%o (PARI) is(n)=isprime(n) && n%64==41 \\ _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 May 25 16:30 EDT 2024. Contains 372801 sequences. (Running on oeis4.)