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A110980
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Integers n such that 10^n+99 is prime.
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4
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1, 2, 4, 6, 13, 14, 16, 17, 19, 30, 31, 60, 68, 73, 113, 144, 276, 288, 364, 449, 473, 739, 833, 1171, 1732, 2292, 3912, 7673, 9458, 16982, 19751, 21479, 23837, 77726
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OFFSET
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1,2
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COMMENTS
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The next term, if one exists, is >100000. - Robert Price, Apr 25 2011
See Kamada link - primecount.txt for terms, primesize.txt for discovery details including probable or proved primes - search on "10w99".
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LINKS
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EXAMPLE
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If n=6, we have 10^6+99 = 1000000+99 = 1000099, which is prime.
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MATHEMATICA
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Select[Range[78000], PrimeQ[10^#+99]&] (* Harvey P. Dale, Aug 23 2013 *)
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PROG
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CROSSREFS
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KEYWORD
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more,nonn
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AUTHOR
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Julien Peter Benney (jpbenney(AT)ftml.net), Sep 30 2005
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EXTENSIONS
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STATUS
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approved
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