A142196 - OEIS

%I #11 Sep 08 2022 08:45:35

%S 73,113,193,233,313,353,433,593,673,953,1033,1153,1193,1433,1553,1753,

%T 1873,1913,1993,2113,2153,2273,2393,2473,2593,2633,2713,2753,2833,

%U 2953,3313,3433,3593,3673,3793,3833,4073,4153,4273,4513,4673,4793,4993,5113,5153

%N Primes congruent to 33 mod 40.

%H Vincenzo Librandi, <a href="/A142196/b142196.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[2000]],MemberQ[{33},Mod[#,40]]&] (* _Vincenzo Librandi_, Aug 22 2012 *)

%t Select[Range[33,5200,40],PrimeQ] (* _Harvey P. Dale_, Dec 16 2012 *)

%o (Magma) [p: p in PrimesUpTo(7000) | p mod 40 eq 33 ]; // _Vincenzo Librandi_, Aug 22 2012

%o (PARI) is(n)=isprime(n) && n%40==33 \\ _Charles R Greathouse IV_, Jul 03 2016

%Y Cf. A000040.

%K nonn,easy

%O 1,1

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