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A219051
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Numbers k such that 3^k - 34 is prime.
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16
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4, 7, 11, 13, 29, 32, 36, 44, 79, 157, 197, 341, 467, 996, 1421, 2479, 3269, 5203, 7987, 9341, 14836, 26047, 47816, 64304, 100693, 127597, 167167, 174697, 182089, 198791
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OFFSET
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1,1
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COMMENTS
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LINKS
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EXAMPLE
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For k = 4, 3^4 - 34 = 47 and 47 is prime. Hence k = 4 is included in the sequence.
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MATHEMATICA
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Do[If[PrimeQ[3^n - 34], Print[n]], {n, 1, 10000}]
Select[Range[10000], PrimeQ[3^# - 34] &] (* Alonso del Arte, Nov 10 2012 *)
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PROG
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CROSSREFS
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Cf. Sequences of numbers k such that 3^k + m is prime:
(m = 32) A219048, (m = -32) A219049, (m = 34) A219050, (m = -34) A219051. Note that if m is a multiple of 3, 3^k + m is also a multiple of 3 (for k greater than 0), and as such isn't prime.
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KEYWORD
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nonn,more
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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