The 2012 countdown

fivemack · 2011-12-18, 12:23

I'm getting a strong feeling that M1009 is an SNFS number (and would be quite a difficult SNFS number, a hundred CPU-years with awkwardly large per-CPU memory requirements); so how about doing things which are more likely to be tractable?

There are three 2^p-1 with p<1000 for which not all factors are known: 929, 947 and 991. They're all SNFS jobs, they're not especially exciting SNFS jobs but they are in the tractable range. M929 is Wagstaff's current most-wanted. How about we try as a forum to get all three done by the end of 2012?

R.D. Silverman · 2011-12-18, 12:42

Quote:

Originally Posted by fivemack

There are three 2^p-1 with p<1000 for which not all factors are known: 929, 947 and 991. They're all SNFS jobs, they're not especially exciting SNFS jobs but they are in the tractable range. ?

Excitement. Hmph. Adventure Hmph. A Jedi craves not these things.

RichD · 2011-12-22, 08:08

Quote:

Originally Posted by fivemack

How about we try as a forum to get all three done by the end of 2012?

Will we solicit a sieve grid or will this be a forum only contribution?

2011-12-18, 12:23	#1
fivemack (loop (#_fork)) Feb 2006 Cambridge, England 18EF₁₆ Posts	The 2012 countdown I'm getting a strong feeling that M1009 is an SNFS number (and would be quite a difficult SNFS number, a hundred CPU-years with awkwardly large per-CPU memory requirements); so how about doing things which are more likely to be tractable? There are three 2^p-1 with p<1000 for which not all factors are known: 929, 947 and 991. They're all SNFS jobs, they're not especially exciting SNFS jobs but they are in the tractable range. M929 is Wagstaff's current most-wanted. How about we try as a forum to get all three done by the end of 2012?

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