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A156940 Primes of the form 2^k + 11. 5

%I #12 Sep 08 2022 08:45:41

%S 13,19,43,139,523,32779,8388619,536870923,2147483659,

%T 36028797018963979,2361183241434822606859,151115727451828646838283,

%U 254629497041810760783555711051172270131433549208242031329517556169297662470417088272924683

%N Primes of the form 2^k + 11.

%F a(n) = 2^A102633(n) + 11. - _R. J. Mathar_, Feb 20 2009

%t Delete[Union[Table[If[PrimeQ[2^n + 11], 2^n + 11, 0], {n, 1, 200}]],1]

%o (Magma) [ a: n in [0..350] | IsPrime(a) where a is 2^n+11 ] // _Vincenzo Librandi_, Nov 26 2010

%Y Cf. A057733, A123250, A104066.

%K nonn

%O 1,1

%A Edwin Dyke (ed.dyke(AT)btinternet.com), Feb 18 2009

%E a(13) from _Vincenzo Librandi_, Apr 29 2010

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Last modified March 28 05:39 EDT 2024. Contains 371235 sequences. (Running on oeis4.)