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A092925
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Smallest prime of the form n(n-1)(n-2)...(n-k)-1, or 0 if no such prime exists.
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5
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2, 3, 19, 5, 41, 7, 71, 89, 109, 11, 17159, 13, 2729, 239, 271, 17, 5813, 19, 419, 461, 72681839, 23, 599, 19275223967999, 701, 11793599, 811, 29, 929, 31, 415017197290314178559999, 968330879, 1659404761645592211554303999999
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OFFSET
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3,1
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COMMENTS
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Conjecture: No term is zero.
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LINKS
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EXAMPLE
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a(13) = 13*12*11*10-1 = 17159, as 13-1,13*12-1, 13*12*11-1, are all composite.
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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EXTENSIONS
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a(900) has 1576 digits and is not included in the b-file because of its size. - Charles R Greathouse IV, Feb 15 2011
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STATUS
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approved
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