[seqfan] Re: Reference that "A027687 4-perfect numbers" is finite
Max Alekseyev
maxale at gmail.com
Mon Jul 16 11:42:51 CEST 2012
I suspect that finiteness of A027687 is not proved but "extremly
probable" as stated at Achim Flammenkamp's page:
http://wwwhomes.uni-bielefeld.de/achim/mpn.html
(notice the difference between answers "yes and proved" and simply
"yes" in the column "Are all discovered?").
The flag 'fini' is thus inappropriate.
Max
On Sun, Jul 15, 2012 at 6:31 PM, Georgi Guninski <guninski at guninski.com> wrote:
> What is the reference that A027687 is finite?
>
> Some searches show this as conjecture for k>=3.
>
> Any reference for k-perfect numbers, k>=4 will do.
>
> Thanks.
>
>
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