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A108493
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Integers n such that 10^n-57 is prime.
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1
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2, 7, 10, 11, 17, 19, 39, 49, 50, 61, 95, 106, 187, 196, 849, 889, 6436, 7370, 14446, 19647, 34399, 39922, 81297, 84305
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OFFSET
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1,1
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COMMENTS
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Numbers corresponding to terms 849 and 889 are certified primes. (Primo 2.2.0 beta) - Ryan Propper, Jul 13 2005
No additional terms <100000.
See Kamada link - primecount.txt for terms, primesize.txt for discovery details including probable or proved primes - search on "99943".
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LINKS
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EXAMPLE
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n = 7 is a member because: 10^7-57 = 10000000-57 = 9999943, which is prime.
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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), Jul 06 2005
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EXTENSIONS
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STATUS
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approved
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