## 5th non-trivial gigantic

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• This one was real close: N=(10268^2521-1)/10267 with 10,109 digits and log(F)/log(N)=30.0034% [yikes!] To achieve 30% we needed a p36 in a titanic composite,
Message 1 of 2 , Jul 3, 2001
This one was real close:
N=(10268^2521-1)/10267
with 10,109 digits and
log(F)/log(N)=30.0034% [yikes!]

To achieve 30% we needed a
p36 in a titanic composite,
and finished off by doing a
c97=p42*p55,
with GMP-ECM, and a
c95=p45*p51,
with Tomabechi-MPQS

David Broadhurst and Bouk de Water
• ... Congratulations David, et al. So, are you the one they call the factor freak :-)? That MPQS crack is an absolute stormer, better than a few of the
Message 2 of 2 , Jul 3, 2001
On Tue, 03 July 2001, d.broadhurst@... wrote:
> This one was real close:
> N=(10268^2521-1)/10267
> with 10,109 digits and
> log(F)/log(N)=30.0034% [yikes!]
>
> To achieve 30% we needed a
> p36 in a titanic composite,
> and finished off by doing a
> c97=p42*p55,
> with GMP-ECM, and a
> c95=p45*p51,
> with Tomabechi-MPQS

Congratulations David, et al. So, are you the one they call the 'factor freak' :-)?
That MPQS crack is an absolute stormer, better than a few of the world's top 10 ECM cracks this year. (http://www.loria.fr/~zimmerma/records/ecmnet.html)

Phil

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