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A057910
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Numbers k such that 2*3^k - 5 is prime.
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1
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2, 4, 6, 10, 12, 13, 19, 43, 48, 64, 72, 97, 187, 190, 336, 348, 676, 2484, 2719, 3298, 4726, 9901, 24466
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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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MATHEMATICA
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Do[ If[ PrimeQ[ 2*3^n - 5 ], Print[ n ] ], {n, 1, 2500} ]
Select[Range[10000], PrimeQ[2*3^#-5]&] (* Harvey P. Dale, Jan 19 2018 *)
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PROG
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CROSSREFS
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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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