New Fermat factors - Page 7

Jatheski · 2012-11-13, 17:36

Quote:

Originally Posted by Batalov

30967*2^106436+1 is a Factor of F106432

(from the next range for GFN:
100000<N<=120000, 20000<k<40000)

I'm curious, how many cores do you use ?

And congratulations for your two finds !!

philmoore · 2012-11-13, 17:50

Woo-hoo!

ixfd64 · 2012-11-20, 05:08

Quote:

Originally Posted by philmoore

Congratulations, Serge! Looks like this is your first Fermat factor. I'm betting it won't be your last.

The prophecy has been fulfilled.

Batalov · 2012-11-21, 19:26

3860269*2^17750+1 is a Factor of F17748

rajula · 2012-11-21, 21:17

Batalov: with this speed you will factorize all the Fermat numbers before Christmas!

rajula · 2012-12-07, 16:16

mmff finally found one!

2864929972774011*2^41+1 is a Factor of F39!

Code:

F39 has a factor: 6300047635658008393597059073 [TF:92:93:mmff 0.26 mfaktc_barrett96_F32_63gs]

Jatheski · 2012-12-07, 16:21

Congratulations

ET_ · 2012-12-07, 16:43

Well done, Tapio!

Though I'm still waiting for mine...

Luigi

Prime95 · 2012-12-07, 17:08

Quote:

Originally Posted by rajula

mmff finally found one!

Woohoo!! I was beginning to worry we'd never find one.

Jatheski · 2012-12-07, 17:56

Quote:

Originally Posted by rajula

mmff finally found one!

2864929972774011*2^41+1 is a Factor of F39!

I'm jealous

Code:

From N	To N	From k	                To k	                Researcher        	Status
41	41	600,000,000,000,000	1,000,000,000,000,000	Fabrice Le Foulher	factoring
41	41	1,000,000,000,000,000	2,000,000,000,000,000	Serge Batalov	        Reserved
41	41	2,000,000,000,000,000	3,000,000,000,000,000	Tapio Rajala	        factoring
41	41	3,000,000,000,000,000	4,000,000,000,000,000	Fabrice Le Foulher	Reserved

Fabrice

philmoore · 2012-12-07, 19:24

Quote:

Originally Posted by Prime95

Woohoo!! I was beginning to worry we'd never find one.

We'll find another one soon, don't worry.

Congratulations, to George and the whole project. 15 new Fermat factors in all this year, the most since 2001 when 22 new factors were discovered. And the year is not over yet...

2012-12-07, 16:16	#72
rajula "Tapio Rajala" Feb 2010 Finland 3²×5×7 Posts	mmff finally found one! 2864929972774011*2^41+1 is a Factor of F39! Code: F39 has a factor: 6300047635658008393597059073 [TF:92:93:mmff 0.26 mfaktc_barrett96_F32_63gs]

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2012-11-13, 17:50	#68
philmoore "Phil" Sep 2002 Tracktown, U.S.A. 3×373 Posts	Woo-hoo!

2012-11-21, 19:26	#70
Batalov "Serge" Mar 2008 Phi(4,2^7658614+1)/2 3⁶×13 Posts	3860269*2^17750+1 is a Factor of F17748

2012-11-21, 21:17	#71
rajula "Tapio Rajala" Feb 2010 Finland 3²·5·7 Posts	Batalov: with this speed you will factorize all the Fermat numbers before Christmas!

2012-12-07, 16:21	#73
Jatheski Apr 2012 993438: i1090 2·73 Posts	Congratulations

2012-12-07, 16:43	#74
ET_ Banned "Luigi" Aug 2002 Team Italia 12CF₁₆ Posts	Well done, Tapio! Though I'm still waiting for mine... Luigi