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A216824
Largest prime factor of the n-th Giuga number A007850(n).
3
5, 13, 41, 59, 47057, 4447, 775807, 713863, 29133437, 3892535183, 110725121051, 1456230512169437
OFFSET
1,1
COMMENTS
See A007850 for comments, references, and links.
EXAMPLE
A007850(1) = 30 = 2*3*5 is the first Giuga number, so a(1) = 5.
CROSSREFS
KEYWORD
nonn,hard,more
AUTHOR
Jonathan Sondow, Sep 17 2012
STATUS
approved