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A156940
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Primes of the form 2^n + 11
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3
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13, 19, 43, 139, 523, 32779, 8388619, 536870923, 2147483659, 36028797018963979, 2361183241434822606859, 151115727451828646838283, 254629497041810760783555711051172270131433549208242031329517556169297662470417088272924683
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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FORMULA
| a(n)=2^A102633(n)+11. [From R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Feb 20 2009]
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MATHEMATICA
| Delete[Union[Table[If[PrimeQ[2^n + 11], 2^n + 11, 0], {n, 1, 200}]], 1]
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PROG
| (MAGMA) [ a: n in [0..350] | IsPrime(a) where a is 2^n+11 ] [From Vincenzo Librandi, Nov 26 2010]
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CROSSREFS
| Cf. A057733, A123250, A104066
Sequence in context: A106903 A098413 A174152 * A180528 A109504 A122042
Adjacent sequences: A156937 A156938 A156939 * A156941 A156942 A156943
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KEYWORD
| nonn
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AUTHOR
| Edwin Dyke (ed.dyke(AT)btinternet.com), Feb 18 2009
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EXTENSIONS
| a(13) from Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Apr 29 2010
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