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A092925
Smallest prime of the form n(n-1)(n-2)...(n-k)-1, or 0 if no such prime exists.
5
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
OFFSET
3,1
COMMENTS
Conjecture: No term is zero.
LINKS
Charles R Greathouse IV, Table of n, a(n) for n = 3..899
EXAMPLE
a(13) = 13*12*11*10-1 = 17159, as 13-1,13*12-1, 13*12*11-1, are all composite.
CROSSREFS
KEYWORD
nonn
AUTHOR
Amarnath Murthy, Mar 18 2004
EXTENSIONS
More terms from Ray Chandler, Mar 23 2004
a(900) has 1576 digits and is not included in the b-file because of its size. - Charles R Greathouse IV, Feb 15 2011
STATUS
approved