A142640 - OEIS

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

%S 109,439,659,769,1319,1429,1759,1979,2089,2309,2749,2969,3079,3299,

%T 3739,4289,4729,5059,5279,5939,6269,6379,6599,6709,7039,7369,7589,

%U 7699,7919,8689,9239,9349,9679,10009,10559,10889,11329,11549,12539,12979,13309,13859

%N Primes congruent to 54 mod 55.

%H Vincenzo Librandi, <a href="/A142640/b142640.txt">Table of n, a(n) for n = 1..1000</a>

%t Select[Prime[Range[2300]], MemberQ[{54}, Mod[#, 55]] &] (* _Vincenzo Librandi_, Sep 01 2012 *)

%t Select[Range[54,14000,55],PrimeQ] (* _Harvey P. Dale_, Jun 11 2014 *)

%o (Magma) [p: p in PrimesUpTo(14000) | p mod 55 eq 54 ]; // _Vincenzo Librandi_, Sep 01 2012

%Y Cf. A000040.

%K nonn,easy

%O 1,1

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