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A142014 Primes congruent to 10 mod 31. 1

%I #18 May 14 2023 13:29:01

%S 41,103,227,599,661,971,1033,1777,1901,2087,2273,2459,2521,2707,3079,

%T 3203,3389,3637,3761,3823,3947,4133,4567,4691,4877,5683,5807,5869,

%U 6427,6551,6737,7109,7481,7853,8039,8101,8287,8597,8783,8969,9341,9403,10271,10333

%N Primes congruent to 10 mod 31.

%H Vincenzo Librandi, <a href="/A142014/b142014.txt">Table of n, a(n) for n = 1..1000</a>

%F a(n) ~ 30n log n. - _Charles R Greathouse IV_, Jul 03 2016

%t Select[Range[10,20000,31],PrimeQ] (* _Vladimir Joseph Stephan Orlovsky_, Apr 20 2011 *)

%t Select[Prime[Range[1300]],Mod[#,31]==10&] (* _Harvey P. Dale_, May 14 2023 *)

%o (Magma) [ p: p in PrimesUpTo(30000) | p mod 31 eq 10 ]; // _Vincenzo Librandi_, Apr 20 2011

%o (PARI) is(n)=isprime(n) && n%31==10 \\ _Charles R Greathouse IV_, Jul 03 2016

%Y Cf. A000040, A142005, A142006.

%K nonn,easy

%O 1,1

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

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Last modified March 29 07:27 EDT 2024. Contains 371265 sequences. (Running on oeis4.)