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A142422 Primes congruent to 10 mod 49. 1

%I #11 Sep 08 2022 08:45:36

%S 59,157,353,647,941,1039,1627,1823,2411,2803,2999,3391,3881,4273,4567,

%T 4861,5351,5449,5743,5939,6037,7213,7507,7703,8291,8389,9173,9467,

%U 9859,10937,11329,12113,12211,12799,13093,13681,13877,14563,14759,15053,15641,15739

%N Primes congruent to 10 mod 49.

%H Vincenzo Librandi, <a href="/A142422/b142422.txt">Table of n, a(n) for n = 1..1000</a>

%F a(n) ~ 42n log n. - _Charles R Greathouse IV_, Jul 03 2016

%t Select[Prime[Range[2500]], MemberQ[{10}, Mod[#, 49]] &] (* _Vincenzo Librandi_, Aug 27 2012 *)

%t Select[Range[10,16000,49],PrimeQ] (* _Harvey P. Dale_, Mar 27 2017 *)

%o (Magma) [p: p in PrimesUpTo(16000) | p mod 49 eq 10]; // _Vincenzo Librandi_, Aug 27 2012

%o (PARI) is(n)=isprime(n) && n%49==10 \\ _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 22:18 EDT 2024. Contains 371782 sequences. (Running on oeis4.)