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Old 2020-09-21, 18:46   #9
VBCurtis's Avatar
Feb 2005
Riverside, CA

3·1,579 Posts
Default 5_2_779m factors

5*2^779-1 is factored:
p91 factor: 2786439502475124609387033054543157113255332993551540466442074957474066878758986269325512321
p103 factor: 2318225374174092224906045403193747790961851647680912446723516387914025452782142166626536345526687134071
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160M raw 31LP relations (136M unique) were enough to build a 5.9M matrix at TD 100. This took 8 hours to solve on a 12-core Haswell-Xeon.
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