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A217133
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Numbers n such that 5^n + 8 is prime.
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1
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OFFSET
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1,2
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COMMENTS
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Naturally these numbers are odd since (6-1)^(2n)+8 is divisible by 3. - Bruno Berselli, Oct 04 2012
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LINKS
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MATHEMATICA
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Select[Range[1, 15000, 2], PrimeQ[5^# + 8] &]
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PROG
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(PARI) for(n=1, 5*10^3, if(isprime(5^n+8), print1(n", ")))
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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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