%I #11 Sep 08 2022 08:45:36
%S 31,113,277,359,523,769,1097,1753,1999,2081,2819,3229,3557,3803,3967,
%T 4049,4787,4951,5197,5279,5443,5689,6263,6427,6673,7001,7247,7411,
%U 8231,8641,8887,8969,9133,9461,9871,10691,10937,11593,11839,12413,12577,12659,12823
%N Primes congruent to 31 mod 41.
%H Vincenzo Librandi, <a href="/A142228/b142228.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[Prime[Range[5000]],MemberQ[{31},Mod[#,41]]&] (* _Vincenzo Librandi_, Aug 24 2012 *)
%t Select[Range[31,14000,41],PrimeQ] (* _Harvey P. Dale_, Sep 29 2013 *)
%o (Magma) [p: p in PrimesUpTo(17000) | p mod 41 eq 31 ]; // _Vincenzo Librandi_, Aug 24 2012
%o (PARI) is(n)=isprime(n) && n%41==31 \\ _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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