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A046154
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Primes of the form n*2^phi(n)+1 with phi the Euler function.
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2
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3, 5, 13, 17, 449, 577, 193, 1153, 86017, 26214401, 114689, 7681, 147457, 754974721, 215504279044097, 14155777, 69206017, 4943727411754159833089, 6269010681299730433, 96757023244289, 31525197391593473, 8658654068737
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OFFSET
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1,1
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COMMENTS
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Sorted along increasing n of the definition. [From R. J. Mathar, Oct 10 2010]
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LINKS
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MATHEMATICA
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Select[Table[n*2^EulerPhi[n]+1, {n, 1, 1000}], PrimeQ] (* Vincenzo Librandi, Jul 13 2012 *)
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CROSSREFS
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KEYWORD
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hard,nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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