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A268067
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Numbers k such that 1 + 2^k + 3^k + 5^k is prime.
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5
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OFFSET
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1,2
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COMMENTS
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LINKS
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MATHEMATICA
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Select[Range[0, 2000], PrimeQ[1 + 2^# + 3^# + 5^#] &]
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PROG
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(PARI) lista(nn) = for(n=0, nn, if(ispseudoprime(1 + 2^n + 3^n + 5^n), print1(n, ", "))); \\ Altug Alkan, Jan 25 2016
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CROSSREFS
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KEYWORD
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nonn,bref,more
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AUTHOR
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STATUS
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approved
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