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Search: Posts Made By: rekcahx
Forum: FactorDB 2011-09-09, 14:29
Replies: 32
Views: 3,526
Posted By rekcahx
My wishlist: 1. Valid html code (including...

My wishlist:

1. Valid html code (including descriptive title for each page): Reason: easier to parse and easier to find correct page/tab is there is factordb pages open.

2. Also field "End...
Forum: Miscellaneous Math 2011-09-04, 18:46
Replies: 3
Views: 566
Posted By rekcahx
Weird factors

Some weeks ago, I factored a few thousand randomly selected 90 digits composites from the factordb. Now I looked into factors.txt and I found some weird results, in example:
...
Forum: FactorDB 2011-08-21, 19:14
Replies: 1,616
Views: 125,043
Posted By rekcahx
Syd, what ist database's oldest (smallest id)...

Syd, what ist database's oldest (smallest id) unfactored composite?
Forum: Factoring 2011-08-18, 00:56
Replies: 6
Views: 1,369
Posted By rekcahx
Extended Cunningham or so

Hello

My last winter project was seek factors for b^n+-1 where b is a prime between 37 and 997 and n is up to 1051. Maybe I will continue it, I don't know yet.

But anyway, there is very short...
Forum: FactorDB 2011-08-18, 00:46
Replies: 1,616
Views: 125,043
Posted By rekcahx
Currently my uploading script is pushing my...

Currently my uploading script is pushing my results for 90 digit composites. Before I started uploading, the composites distribution listed over 7500 such composites... :smile:
Forum: Factoring 2011-08-15, 20:38
Replies: 20
Views: 17,808
Posted By rekcahx
Is the ElevenSmooth project dead? As I can see,...

Is the ElevenSmooth project dead? As I can see, last factor is added to project's site over 2 years ago.
Forum: Factoring 2011-01-30, 18:34
Replies: 71
Views: 52,561
Posted By rekcahx
EECM-MPFQ: http://eecm.cr.yp.to/mpfq.html ...

EECM-MPFQ: http://eecm.cr.yp.to/mpfq.html
Interesting software, but not yet very usable.
Forum: YAFU 2011-01-19, 22:03
Replies: 1,276
Views: 108,995
Posted By rekcahx
I've a phenom 9950 x4 system, so how to test?...

I've a phenom 9950 x4 system, so how to test? Currently I run quite large job with 2 cores, so I'm able run tests only on 2 remaining cores.
Forum: FactorDB 2011-01-16, 20:53
Replies: 1,616
Views: 125,043
Posted By rekcahx
Maybe. In example:...

Maybe.
In example: http://factordb.com/index.php?query=x^3-1&use=x&x=2&VP=on&OD=on&PR=on&FF=on&PRP=on&CF=on&U=on&C=on&perpage=200&format=1&sent=Show
Forum: FactorDB 2011-01-16, 13:34
Replies: 1,616
Views: 125,043
Posted By rekcahx
I found a problem from the DB. ...

I found a problem from the DB.

http://factordb.com/index.php?id=1100000000217043267

This 7 digit number 1210012 is fully factored, but its status is still "C".
Forum: FactorDB 2010-10-23, 09:57
Replies: 1,616
Views: 125,043
Posted By rekcahx
This analysis sucks. I tried it for some sites,...

This analysis sucks. I tried it for some sites, and all results were absolute wrong.
Forum: FactorDB 2010-10-13, 21:06
Replies: 1,616
Views: 125,043
Posted By rekcahx
Syd, could you add "text, only composite...

Syd, could you add "text, only composite cofactors" option to output formats menu in variable search?

Thank you.
Forum: FactorDB 2010-09-29, 21:22
Replies: 1,616
Views: 125,043
Posted By rekcahx
Hello Syd. There is known factorizations of lucas...

Hello Syd. There is known factorizations of lucas and fibonacci numbers: http://mersennus.net/fibonacci/
Forum: FactorDB 2010-09-24, 14:44
Replies: 1,616
Views: 125,043
Posted By rekcahx
If I know that 35735836391277091 is a factor of ...

If I know that 35735836391277091 is a factor of (10^3434*15+10^6869-1)/69 , what is correct GET string for that?

Yes, I can upload factors by hand using normal web browser, but it requires too...
Forum: FactorDB 2010-09-20, 23:13
Replies: 1,616
Views: 125,043
Posted By rekcahx
Helper script + yafu

Hi. I did some refactorization to helper script. This version uses Yafu instead of Msieve.

Changes: shuffle-subroutine from end to begin. Spaces converted to tabs. Yafu insted of Msieve.

...
Forum: YAFU 2010-09-13, 17:05
Replies: 1,276
Views: 108,995
Posted By rekcahx
I think that there is only one factorization...

I think that there is only one factorization process at once, but I'm not sure. I've a trivial looping script which starts yafu, wait until yafu ends and then do something with results.

I've a...
Forum: FactorDB 2010-09-13, 16:47
Replies: 1,616
Views: 125,043
Posted By rekcahx
Syd, thank you for improvements of the DB. ...

Syd, thank you for improvements of the DB.

There is some minor, non mathematical cases, i.e. nested a-tags. It is slightly hard to parse.

http://factordb.com/listtype.php?t=3&start=99700
...
Forum: YAFU 2010-09-13, 16:14
Replies: 1,276
Views: 108,995
Posted By rekcahx
Bsquared. My gcc is 4.4.4. Comprehensive gcc -v...

Bsquared. My gcc is 4.4.4. Comprehensive gcc -v output:

rekcahx@oah:~$ gcc -v
Using built-in specs.
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Debian...
Forum: YAFU 2010-09-11, 19:15
Replies: 1,276
Views: 108,995
Posted By rekcahx
Some crashes

Hi. I sometimes (frequency about 1/100) yafu 1.19-2 crashes.

Here is backtrace:

*** glibc detected *** ./y: double free or corruption (!prev): 0x00000000016c6090 ***
======= Backtrace:...
Forum: Factoring 2010-03-26, 20:45
Replies: 31
Views: 4,542
Posted By rekcahx
Just now, I'm runing some checks for cofactor,...

Just now, I'm runing some checks for cofactor, but I've to get some sleep.
Forum: FactorDB 2010-03-24, 17:30
Replies: 1,616
Views: 125,043
Posted By rekcahx
What is wrong with the DB? 19^981-1 has a 1171...

What is wrong with the DB?
19^981-1 has a 1171 digit composite cofator. This factor has some known factors too - the DB knows them but for some unknown reason 1171 digit cofactor is marked with red...
Forum: YAFU 2010-03-13, 16:31
Replies: 1,276
Views: 108,995
Posted By rekcahx
Yeah, this seems to be fixed in 1.17. Thanks. ...

Yeah, this seems to be fixed in 1.17. Thanks.

Edit:
Btw, precompiled 64k-linux64 benchmarks (factored number was 19^100+2 and processor is Phenom 9950):

SIQS elapsed time = 1311.0710 seconds....
Forum: YAFU 2010-03-13, 11:52
Replies: 1,276
Views: 108,995
Posted By rekcahx
Problem?

I think that there is a problem in parser.

In first case, all went OK
but in second case, miserably failure:
In third case, all is now OK
Forum: Factoring 2010-03-09, 21:24
Replies: 87
Views: 8,289
Posted By rekcahx
Error in applet

Hello.

I'm unable to run this applet. These lines are from Java Console:
Forum: Software 2010-03-07, 17:09
Replies: 14
Views: 1,878
Posted By rekcahx
I downloaded this implementation and I made some...

I downloaded this implementation and I made some changes for compiling.


diff -Naur atkin49-orig.cpp atkin49.cpp
--- atkin49-orig.cpp 2010-03-07 19:04:03.000000000 +0200
+++ atkin49.cpp...
Showing results 1 to 25 of 30

 
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