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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 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

See A007850 for comments, references, and links.

LINKS

Table of n, a(n) for n=1..12.

EXAMPLE

A007850(1) = 30 = 2*3*5 is the first Giuga number, so a(1) = 5.

CROSSREFS

Cf. A007850, A216823, A236434.

Sequence in context: A121872 A228922 A025490 * A230812 A087938 A103729

Adjacent sequences:  A216821 A216822 A216823 * A216825 A216826 A216827

KEYWORD

nonn,hard,more

AUTHOR

Jonathan Sondow, Sep 17 2012

STATUS

approved

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Last modified November 14 01:24 EST 2019. Contains 329108 sequences. (Running on oeis4.)