A142845 - OEIS

%I #9 Sep 08 2022 08:45:37

%S 47,1511,1877,1999,2243,2609,2731,3463,4073,4561,5171,5659,5903,6269,

%T 7001,7489,8221,8831,9319,9929,11027,11149,11393,12491,12613,12979,

%U 13711,14321,15053,15541,15907,16273,16883,17737,17981,18713,19079,20177,20543,21031

%N Primes congruent to 47 mod 61.

%H Vincenzo Librandi, <a href="/A142845/b142845.txt">Table of n, a(n) for n = 1..1000</a>

%t Select[Prime[Range[2700]], MemberQ[{47}, Mod[#, 61]] &] (* _Vincenzo Librandi_, Sep 05 2012 *)

%t Select[Range[47,22000,61],PrimeQ] (* _Harvey P. Dale_, Apr 23 2019 *)

%o (Magma) [p: p in PrimesUpTo(22000) | p mod 61 eq 47 ] ; // _Vincenzo Librandi_, Sep 05 2012

%Y Cf. A000040.

%K nonn,easy

%O 1,1

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