[seqfan] Re: A160376: typo
zakseidov at yahoo.com
Fri Oct 23 22:42:19 CEST 2009
33916801 is simply typo:
39916801 = 11!+1 = prime
--- On Fri, 10/23/09, Charles Greathouse <charles.greathouse at case.edu> wrote:
> From: Charles Greathouse <charles.greathouse at case.edu>
> Subject: [seqfan] Re: A160376
> To: "Sequence Fanatics Discussion list" <seqfan at list.seqfan.eu>
> Date: Friday, October 23, 2009, 4:26 PM
> It's worth noting that A160376(11) is
> wrong by any reasonable
> interpretation, as 33916801 does not divide 11! + 1.
> I would mark it as a dupe.
> Charles Greathouse
> Case Western Reserve University
> On Fri, Oct 23, 2009 at 4:02 PM, Michael Porter <ic_designer at verizon.net>
> > I'm looking at A160376, and I think the description
> should be "Largest prime divisor of (n!+1)..." instead of
> "Largest divisor of (n!+1)". For example, 9!+1 = 362881 =
> 19*71*269, so the largest divisor is 71*269=19099, but the
> largest prime divisor is 269, which is the value in the
> sequence. I think the author probably meant "Largest prime
> divisor", but this would make it a duplicate of A002583.
> > What should I do?
> > - Michael
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