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Forum: Factoring 2020-09-29, 10:39
Replies: 8
Views: 470
Posted By wreck
1. I thought you mean 2^1277-1, but the link says...

1. I thought you mean 2^1277-1, but the link says it is not.
2. For the factor of 2^2991277-1, though it is less interest than 2^1277-1, it is still a interesting number. For time to time, I give a...
Forum: Cunningham Tables 2020-07-02, 00:04
Replies: 186
Views: 19,700
Posted By wreck
I guess you mean increase alim and decrease rlim,...

I guess you mean increase alim and decrease rlim, use option -a.
But I test again with these changes, the situation is the same.
When I use alim=800M rlim =200M -a, and binary lasieve5_f compiled,...
Forum: Cunningham Tables 2020-06-29, 10:29
Replies: 186
Views: 19,700
Posted By wreck
I test the speed 4 years ago, the result shows...

I test the speed 4 years ago, the result shows deg 7 is much slower than deg 6.
deg 6 need 102 CPU years to collect 1200M raw relations, while deg 7 need 182 CPU years on an i3 CPU.
I attach the...
Forum: Cunningham Tables 2020-02-24, 05:28
Replies: 186
Views: 19,700
Posted By wreck
Repunit number

There are some special effort at repunit number (10^n - 1).

Kurt Team (Bo Chen, Wenjie Fang, Alfred Eichhorn, Danilo Nitsche, Kurt Beschorner, et al. ) aim at factoring

these number use snfs...
Forum: Data 2020-01-19, 10:46
Replies: 3
Views: 1,591
Posted By wreck
Yes, I found this two factors is found before, ...

Yes, I found this two factors is found before,
but I dont know how to delete the post,
and it is still a little strange to mark this factor
found at 2020, so this post perhaps has some useful...
Forum: Data 2020-01-17, 04:58
Replies: 3
Views: 1,591
Posted By wreck
Two small factors found by Bommer

In the recent cleared report, I found there are two small factors report, both less than 40 bits.
The two factors is found by Bommer using ECM with B1 = 25000.
The two exponents is 218527 and...
Forum: Cunningham Tables 2019-12-18, 06:28
Replies: 482
Views: 27,136
Posted By wreck
Congratulations! Could you attach the full...

Congratulations!
Could you attach the full msieve postprocessing log here?
I'm interested in the memory use, matrix size, relation count,
etc.

Last time when doing this postprocessing crash, I...
Forum: Lone Mersenne Hunters 2019-12-18, 04:50
Replies: 20
Views: 3,283
Posted By wreck
900.0M - 900.1M 2016-01-15 ~ 2016-12-17 34 /...

900.0M - 900.1M
2016-01-15 ~ 2016-12-17 34 / (70t71 388; 70t72 101) 17.6
2016-12-24 ~ 2017-12-17 10 / (70t71 534; 78t79 64) 8.4
2017-12-31 ~ 2018-12-17 3 / (70t71 229; 78t79 ...
Forum: PrimeNet 2019-11-22, 20:59
Replies: 28
Views: 2,490
Posted By wreck
There is a way to find the curve count done for...

There is a way to find the curve count done for each B1, for example
https://www.mersenne.org/report_exponent/?exp_lo=1277&exp_hi=&full=1&ecmhist=1
gives the detail information for M1277.
It...
Forum: Cunningham Tables 2019-09-06, 10:08
Replies: 482
Views: 27,136
Posted By wreck
The line "reading large ideals from disk" is...

The line "reading large ideals from disk" is first time I ' ve read.
After look at the code more,
there is a code says
if (filter.lp_file_size < ram_size / 2) {
...
filter_read_lp_file(obj,...
Forum: Cunningham Tables 2019-09-06, 09:15
Replies: 482
Views: 27,136
Posted By wreck
Here is the relevant code after the crash ...

Here is the relevant code after the crash

logprintf(obj, "commencing in-memory singleton removal\n");

num_relations = filter->num_relations;
orig_num_ideals = num_ideals =...
Forum: Msieve 2019-09-06, 04:42
Replies: 12
Views: 3,060
Posted By wreck
Which CPU are you using? The cpu architecture...

Which CPU are you using?
The cpu architecture should the same as the the msieve binary.
Also there is a small program which named remdup, that could remove most
error relations.
In the past , I...
Forum: Cunningham Tables 2019-09-06, 04:34
Replies: 482
Views: 27,136
Posted By wreck
@VBCutris : Could you attach the crash msieve...

@VBCutris : Could you attach the crash msieve log?
I believe this is the first time msieve tackle unique relations larger than 1000M.
Forum: Msieve 2019-07-28, 22:23
Replies: 15
Views: 3,025
Posted By wreck
R507 has been factored at the second try...

R507 has been factored at the second try successfully, after the following steps:
After msieve -nc2,
-WIN10 update
-new start
-nc3 without others programs.
also, the following difference between...
Forum: Msieve 2019-06-06, 23:26
Replies: 15
Views: 3,025
Posted By wreck
From the binary name, which seems compiled by...

From the binary name, which seems compiled by ATH,
it should be 64bit binary GMP. And when I search in the website , it says 64 bit programe could not use 32 bit library.

The second try after use...
Forum: Msieve 2019-05-28, 12:58
Replies: 15
Views: 3,025
Posted By wreck
I use the following command to start dep 2. ...

I use the following command to start dep 2.
msieve-svn1018-cuda75-sandybridge.exe -i R507.ini -l R507.log -s part-0804-2.out -nf R507.fb -nc3 "target_density=130 dep_first=16 dep_last=32" -v -t 16...
Forum: Msieve 2019-05-26, 00:46
Replies: 15
Views: 3,025
Posted By wreck
NFS Square Root failed

When factoring R507, we meet a problem at the stage of square root.
the log is something like

Msieve v. 1.54 (SVN 1018)
Sat May 25 15:07:05 2019
random seeds: 793bae58 dd6e995c
factoring...
Forum: Lounge 2019-03-27, 10:31
Replies: 53
Views: 1,561
Posted By wreck
Forum: PrimeNet 2017-09-24, 01:04
Replies: 497
Views: 47,321
Posted By wreck
Thanks for your respones. Your reply promote me...

Thanks for your respones.
Your reply promote me to analyze these 3 methods more carefully.
And the result surprised me a little, I admit I am wrong.
The two key points I miss is that
1. (2^n-1)...
Forum: PrimeNet 2017-09-23, 15:08
Replies: 497
Views: 47,321
Posted By wreck
Except by k or by p, I ' d like to share another ...

Except by k or by p, I ' d like to share another
algorithm that sort by the number p, but not by the
exponent p.

Suppose we want to find all the factors of number 2^n - 1.
where n could be a...
Forum: GMP-ECM 2017-07-08, 12:58
Replies: 21
Views: 4,906
Posted By wreck
I'm not sure why you use B1=50e9, but , here is...

I'm not sure why you use B1=50e9, but , here is some of my experience.
For curiocity / test reason, I ran 1 curve at B1=25e9 (t80) on 10,323- c271,
which takes about one week.
I use -maxmem 12000...
Forum: Factoring 2017-05-10, 15:08
Replies: 16
Views: 2,347
Posted By wreck
lpb34

This post is aimed to share some information that
I collected for lpbr/lpba 34.

Background:
I am considering the possible of factoring 10^323-1.
I am not sure whether msieve could tackle...
Forum: Cunningham Tables 2017-05-07, 14:42
Replies: 163
Sticky: 10+ table
Views: 27,803
Posted By wreck
10,1350M is factored

10,1350M is factored by Team "Bo Chen, Wenjie Fang, Maksym Voznyy, Alfred Eichhorn and Kurt Beschorner".
c197 = p83 * p114
The polynomial is found by Maksym using CADO, with a negative c5,
which...
Forum: Cunningham Tables 2016-10-13, 15:05
Replies: 163
Sticky: 10+ table
Views: 27,803
Posted By wreck
R650

About 10,325+, here is some informations I have sent to Kurt.

2015-08-01

I have explain the step to get combined value of polynomial
through sina email, and I think other two persons maybe...
Forum: Cunningham Tables 2016-09-04, 12:01
Replies: 73
Sticky: 10- table
Views: 17,168
Posted By wreck
10,343- c238 factored

R343 is factored.
Postprocessing and report attached.
Showing results 1 to 25 of 161

 
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