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Search: Posts Made By: Walter Nissen
Forum: NFS@Home 2012-11-01, 07:45
Replies: 1,826
Views: 112,501
Posted By Walter Nissen
Smile That's just what I'm thinking . Great news to...

That's just what I'm thinking .
Great news to ease the third day of partial power outage .

xyzzy , sincere thanks for np_112 , and also for np_111 , which
seemed to involve some struggle .
...
Forum: Factoring 2012-09-12, 00:57
Replies: 36
Views: 3,288
Posted By Walter Nissen
Question Yes.I don't see this . If some curves are run...

Yes.I don't see this .
If some curves are run at a somewhat smaller B1 , a factor may be
found quickly .
If B1 escalates , the probability of finding larger factors is
increased ....
Forum: Factoring 2012-09-06, 15:18
Replies: 36
Views: 3,288
Posted By Walter Nissen
Question One of the things I've been looking for is the...

One of the things I've been looking for is the definition of T50 , or
some background on it .


It seems obvious that every time you run a curve , you learn
something .
There are 3...
Forum: Factoring 2012-09-06, 15:13
Replies: 36
Views: 3,288
Posted By Walter Nissen
Here is some supplementary info for my next post...

Here is some supplementary info for my next post :

In a run using "-I 1" from 26e6 , after 2741 curves , B1 was
just a hair over 52e6 , a doubling .
The first 5 curves above 52e6 took ...
Forum: Factoring 2012-09-06, 14:08
Replies: 36
Views: 3,288
Posted By Walter Nissen
Question When you were testing for optimal B2scale , did...

When you were testing for optimal B2scale , did you define optimal as
a ) providing the theoretical 1-to-1 ratio with step 1 ,
or
b ) minimizing CPU or wall clock time ?
Is a ) valid ?
Forum: Factoring 2012-09-06, 00:39
Replies: 36
Views: 3,288
Posted By Walter Nissen
Question I think perhaps you gentlemen have explained the...

I think perhaps you gentlemen have explained the state-of-the-art
of optimal B1's .
Thank you .I think this is quite true as far as the table would take it , to
the optimal B1 value , for the...
Forum: Factoring 2012-09-02, 23:39
Replies: 36
Views: 3,288
Posted By Walter Nissen
Question Sure , no problem . Dubslow and I have the same...

Sure , no problem .
Dubslow and I have the same question .
The table , back in message # 6 , comes from the GMP-ECM readme file
and from :
http://www.loria.fr/~zimmerma/records/ecm/params.html...
Forum: Factoring 2012-09-01, 23:07
Replies: 36
Views: 3,288
Posted By Walter Nissen
Question http://www.mersenneforum.org/showthread.php?t=1161...

http://www.mersenneforum.org/showthread.php?t=11615&page=11
contains some informative messages from akruppa .

The depth of my ignorance is such that I can't cite an example with
specific digit...
Forum: Factoring 2012-08-27, 14:59
Replies: 36
Views: 3,288
Posted By Walter Nissen
Question Thanks much for your perceptive response . ...

Thanks much for your perceptive response .

Computing a couple more ratios ( of ratios ) here :
In the B1 ratio column , the ratio of the largest ratio
to the smallest ratio is more than 2.1 ....
Forum: Factoring 2012-08-26, 00:07
Replies: 36
Views: 3,288
Posted By Walter Nissen
Question cites ?

Perhaps part of your post is an answer with a
quite serious intent .
If so , what parts of what papers do I need to read to view this
ellipticity for myself ?

Extending the readme table using...
Forum: Factoring 2012-08-21, 04:48
Replies: 36
Views: 3,288
Posted By Walter Nissen
Question B1 and # curves for ECM

In the table in the readme , we find :digits optimal B1 expected curves
N(B1,B2,D)
default poly
20 11e3 74
25 5e4 214
...
Forum: NFS@Home 2012-08-07, 15:04
Replies: 28
Views: 5,192
Posted By Walter Nissen
Yeah , I can't think of a second-largest factor...

Yeah , I can't think of a second-largest factor which is larger than
this p143 , either .
Forum: NFS@Home 2012-08-06, 19:48
Replies: 28
Views: 5,192
Posted By Walter Nissen
Thumbs up I verify that M_1061 is a semi-prime , p143 *...

I verify that M_1061 is a semi-prime , p143 * p177 .
Is this p143 the largest second-largest prime factor ever found by any means ?
Forum: Factoring 2012-04-29, 18:06
Replies: 797
Views: 59,810
Posted By Walter Nissen
Question quintic vs. sextic

I have a preliminary indication that
104 * (103^21)^5 + 103^2 * (104^21)^5
generates relations about 19 % faster than
103 * (103^17)^6 + 104^2 * (104^17)^6
How can I use this to decide whether...
Forum: Factoring 2012-04-09, 17:03
Replies: 797
Views: 59,810
Posted By Walter Nissen
Thanks for mentioning that . Is there a table...

Thanks for mentioning that .
Is there a table available of these constants or ,
at least , the one for quintic and sextic ?
Forum: Factoring 2012-04-09, 16:09
Replies: 797
Views: 59,810
Posted By Walter Nissen
quintic vs. sextic

This draft is very helpful with many points , so I have
accepted with thanks your kind offer by pm .

I do know a little algebra , but make no pretense of any
practical command of Galois theory ,...
Forum: Factoring 2012-04-03, 12:01
Replies: 797
Views: 59,810
Posted By Walter Nissen
Question Thanks for responding . I've struggled...

Thanks for responding .

I've struggled trying to apply your papers to the tools now
available .
In part , this may be because I've missed so many tutorials .

I have what looks like a late...
Forum: Factoring 2012-04-03, 10:40
Replies: 797
Views: 59,810
Posted By Walter Nissen
Question more for a sextic ?

Is a sextic expected to require more relations than a quintic ?
Thanks .
Forum: Msieve 2012-03-31, 01:52
Replies: 740
Views: 52,303
Posted By Walter Nissen
Question counting on relations

I expect increasing lpbr/a by 1 will nearly double the # of
unique relations required , but how will moving from a quintic
to a sextic change the # of unique relations required ?

That's my...
Forum: Msieve 2012-03-31, 01:49
Replies: 740
Views: 52,303
Posted By Walter Nissen
Great , I hope this is/hasbeen fruitful .

Great ,
I hope this is/hasbeen fruitful .
Forum: Math 2012-03-23, 02:52
Replies: 15
Views: 1,853
Posted By Walter Nissen
No, the confusion occurs because people use...

No, the confusion occurs because people use terminology without
actually having read about the algorithms.[/QUOTE]Not at all .

A ( presumably high-quality ) predicate function was being offered...
Forum: Math 2012-03-21, 22:22
Replies: 15
Views: 1,853
Posted By Walter Nissen
Well said , Alex . A lot of confusion arises...

Well said , Alex .

A lot of confusion arises because people keep wanting to use
the word "prime" to describe these tests of compositeness .
Primo provides a test of primality .
Full TD (...
Forum: Msieve 2012-03-13, 18:12
Replies: 740
Views: 52,303
Posted By Walter Nissen
I hope you made a full backup of the directory ,...

I hope you made a full backup of the directory , so you aren't burned
futzing around with it .

I thank you heartily for your earlier suggestion I use SNFS ....
Forum: Factoring 2012-01-28, 14:21
Replies: 797
Views: 59,810
Posted By Walter Nissen
Question As I understand it , what I've done owes a great...

As I understand it , what I've done owes a great deal to msieve and those
who've produced it , maybe principally Jason Papadopoulos .
I'm just guessing , but are you suggesting I use msieve instead...
Forum: Factoring 2012-01-27, 20:25
Replies: 797
Views: 59,810
Posted By Walter Nissen
Question Thanks for your reply . Hmmm , the .log from my...

Thanks for your reply .
Hmmm , the .log from my most recent successful run reads :
Sat Jan 14 03:12:41 2012 -> Running matrix solving step ...
Sat Jan 14 03:12:41 2012 -> msieve -s 96\96.dat -l...
Showing results 1 to 25 of 78

 
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