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A108328
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Integers n such that 10^n - 23 is a prime number.
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16
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3, 11, 17, 23, 35, 161, 765, 3473, 6887, 27681, 34313
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OFFSET
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1,1
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COMMENTS
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See Kamada link - primecount.txt for terms, primesize.txt for discovery details including probable or proved primes - search on "99977".
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LINKS
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EXAMPLE
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n = 3 is a member because 10^3 - 23 = 1000 - 23 = 977, which is prime.
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MATHEMATICA
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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), Jun 30 2005
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EXTENSIONS
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STATUS
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approved
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