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A104070
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Primes of the form 2^k + 9.
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15
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11, 13, 17, 41, 73, 137, 521, 1033, 262153, 8388617, 1073741833, 137438953481, 140737488355337, 144115188075855881, 73786976294838206473, 4835703278458516698824713, 39614081257132168796771975177
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OFFSET
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1,1
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LINKS
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FORMULA
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MATHEMATICA
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a = Delete[Union[Flatten[Table[If [PrimeQ[2^n + 9] == True, 2^ n + 9, 0], {n, 1, 400}]]], 1]
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PROG
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(Magma) [a: n in [0..250] | IsPrime(a) where a is 2^n+9]; // Vincenzo Librandi, Jan 26 2011
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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