24653Re: Project to factorise F9(10)?
- Nov 17, 2012GIMPS reported a 143 digit factor of M1061 found using ECM on 04AUG2012
--- In firstname.lastname@example.org, Phil Carmody <thefatphil@...> wrote:
> --- On Fri, 11/16/12, julienbenney <jpbenney@...> wrote:
> > Regarding the question of Fermat
> > factorisation, one question that has interested me is the
> > factorisation of the ninth generalised Fermat number in base
> > ten, or 10^512+1 in more conventional notation.
> > This number has three known prime factors in 1514497,
> > 302078977 and 3611707318387778163302401, plus a 473-digit
> > composite factor. Of the known factors, the 25-digit and
> > largest factor was found twelve years ago, and I do not know
> > how much further F9(10) has been searched since 2000.
> > I wonder if there is any possibility that the complete
> > factorisation of F9(10) could be done in the future and
> > whether it would be worth more effort than it is receiving
> > currently?
> It's always worth flinging such numbers at ECM.
> This should give you hope, assuming you have access to lots of MIPS:
> 1 79 2302872188505279576573535015926441913945044975483579529517513795897664211127797 11^306+1 800e6 3648110021 2012-Aug-12 S. Wagstaff
> Shame on everyone who heard of this, and didn't report it on - wow!
- << Previous post in topic Next post in topic >>