Cullen and Woodall numbers factorization

've been running factorization of CW numbers for a few hours a day but I would like to help more Paul's search. This is more important and more difficult than prime searching.
Anyway, info here: http://www.leyland.vispa.com/numth/f...woodall/cw.htm in case someone wants to anonymously help.

The client is ecmclient and each core needs about 1GB of memory. In the attachment you have the 64 bits version and it will only work on 64 Win OS's (XP/Vista). To set up the client with your settings you need to edit ecmclient.cfg and change "id" and "email address". To run the client just run ecmclient.exe for each folder. A typical output is something like this (ecmclient.log):

Quote:

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[2009-02-21 20:06:19 GMT] ECMNET Client application v2.6.1 started
[2009-02-21 20:06:19 GMT] User email address is *****
[2009-02-21 20:06:19 GMT] a: Getting work from server malibu.gen.cam.ac.uk at port 8194
[2009-02-21 20:06:21 GMT] a: Received C_891 (length 220) : ECM with B1=11000000 * 4092 curves
[2009-02-21 20:08:34 GMT] a: Did 1 of 4092 curve for C_891. No factors found.
[2009-02-21 20:10:46 GMT] a: Did 2 of 4092 curves for C_891. No factors found.
[2009-02-21 20:13:00 GMT] a: Did 3 of 4092 curves for C_891. No factors found.
[2009-02-21 20:15:10 GMT] a: Did 4 of 4092 curves for C_891. No factors found.
[2009-02-21 20:17:19 GMT] a: Did 5 of 4092 curves for C_891. No factors found.
[2009-02-21 20:19:28 GMT] a: Did 6 of 4092 curves for C_891. No factors found.
[2009-02-21 20:21:38 GMT] a: Did 7 of 4092 curves for C_891. No factors found.
[2009-02-21 20:23:47 GMT] a: Did 8 of 4092 curves for C_891. No factors found.
[2009-02-21 20:25:56 GMT] a: Did 9 of 4092 curves for C_891. No factors found.
[2009-02-21 20:28:07 GMT] a: Did 10 of 4092 curves for C_891. No factors found.
[2009-02-21 20:30:18 GMT] a: Did 11 of 4092 curves for C_891. No factors found.
[2009-02-21 20:32:26 GMT] a: Did 12 of 4092 curves for C_891. No factors found.
[2009-02-21 20:34:36 GMT] a: Did 13 of 4092 curves for C_891. No factors found.
[2009-02-21 20:36:47 GMT] a: Did 14 of 4092 curves for C_891. No factors found.
[2009-02-21 20:38:56 GMT] a: Did 15 of 4092 curves for C_891. No factors found.
[2009-02-21 20:41:04 GMT] a: Did 16 of 4092 curves for C_891. No factors found.
[2009-02-21 20:43:16 GMT] a: Did 17 of 4092 curves for C_891. No factors found.
[2009-02-21 20:45:26 GMT] a: Did 18 of 4092 curves for C_891. No factors found.
[2009-02-21 20:47:37 GMT] a: Did 19 of 4092 curves for C_891. No factors found.
[2009-02-21 20:49:46 GMT] a: Did 20 of 4092 curves for C_891. No factors found.
[2009-02-21 20:51:56 GMT] a: Did 21 of 4092 curves for C_891. No factors found.
[2009-02-21 20:54:06 GMT] a: Did 22 of 4092 curves for C_891. No factors found.
[2009-02-21 20:56:17 GMT] a: Did 23 of 4092 curves for C_891. No factors found.
[2009-02-21 20:58:26 GMT] a: Did 24 of 4092 curves for C_891. No factors found.
[2009-02-21 21:00:36 GMT] a: Did 25 of 4092 curves for C_891. No factors found.
[2009-02-21 21:02:45 GMT] a: Did 26 of 4092 curves for C_891. No factors found.
[2009-02-21 21:04:54 GMT] a: Did 27 of 4092 curves for C_891. No factors found.
[2009-02-21 21:07:06 GMT] a: Did 28 of 4092 curves for C_891. No factors found.
[2009-02-21 21:09:15 GMT] a: Did 29 of 4092 curves for C_891. No factors found.
[2009-02-21 21:11:26 GMT] a: Did 30 of 4092 curves for C_891. No factors found.
[2009-02-21 21:13:38 GMT] a: Did 31 of 4092 curves for C_891. No factors found.
[2009-02-21 21:15:48 GMT] a: Did 32 of 4092 curves for C_891. No factors found.
[2009-02-21 21:17:58 GMT] a: Did 33 of 4092 curves for C_891. No factors found.
[2009-02-21 21:20:09 GMT] a: Did 34 of 4092 curves for C_891. No factors found.
[2009-02-21 21:22:20 GMT] a: Did 35 of 4092 curves for C_891. No factors found.
[2009-02-21 21:24:30 GMT] a: Did 36 of 4092 curves for C_891. No factors found.
[2009-02-21 21:26:39 GMT] a: Did 37 of 4092 curves for C_891. No factors found.
[2009-02-21 21:28:50 GMT] a: Did 38 of 4092 curves for C_891. No factors found.
[2009-02-21 21:30:59 GMT] a: Did 39 of 4092 curves for C_891. No factors found.
[2009-02-21 21:33:09 GMT] a: Did 40 of 4092 curves for C_891. No factors found.
[2009-02-21 21:35:19 GMT] a: Did 41 of 4092 curves for C_891. No factors found.
[2009-02-21 21:37:30 GMT] a: Did 42 of 4092 curves for C_891. No factors found.
[2009-02-21 21:39:39 GMT] a: Did 43 of 4092 curves for C_891. No factors found.
[2009-02-21 21:41:48 GMT] a: Did 44 of 4092 curves for C_891. No factors found.
[2009-02-21 21:43:58 GMT] a: Did 45 of 4092 curves for C_891. No factors found.
[2009-02-21 21:46:07 GMT] a: Did 46 of 4092 curves for C_891. No factors found.
[2009-02-21 21:48:15 GMT] a: Did 47 of 4092 curves for C_891. No factors found.
[2009-02-21 21:50:24 GMT] a: Did 48 of 4092 curves for C_891. No factors found.
[2009-02-21 21:52:37 GMT] a: Did 49 of 4092 curves for C_891. No factors found.
[2009-02-21 21:54:49 GMT] a: Did 50 of 4092 curves for C_891. No factors found.
[2009-02-21 21:57:01 GMT] a: Did 51 of 4092 curves for C_891. No factors found.
[2009-02-21 21:59:11 GMT] a: Did 52 of 4092 curves for C_891. No factors found.
[2009-02-21 22:01:21 GMT] a: Did 53 of 4092 curves for C_891. No factors found.
[2009-02-21 22:03:31 GMT] a: Did 54 of 4092 curves for C_891. No factors found.
[2009-02-21 22:05:40 GMT] a: Did 55 of 4092 curves for C_891. No factors found.
[2009-02-21 22:07:52 GMT] a: Did 56 of 4092 curves for C_891. No factors found.

[2009-02-21 22:07:52 GMT] Total Time: 2:01:34 Curves: 56 Total Work: 29814 Total Factors Found: 0
[2009-02-21 22:07:52 GMT] a: Returning work to server malibu.gen.cam.ac.uk at port 8194
[2009-02-21 22:07:52 GMT] a: Uploading 56 ECM curves for C_891 (B1=11000000)
[2009-02-21 22:07:56 GMT] a: 56 ECM curves for C_891 (B1=11000000) were accepted
[2009-02-21 22:07:56 GMT] a: Getting work from server malibu.gen.cam.ac.uk at port 8194

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You can check the progress of the integers to factorize at: http://malibu.gen.cam.ac.uk:8194/
If you get the same integers, example, 4 times the C_891, you won't be doing the same work on all your cores because the curves start with the different parameters. It's normal.

If you look at that page you have a board with B1 levels. Currently we are at B1=11M, that means, each integers needs at least ~4500 curves or even more.

This is a work you will be helping anonymously. If you get a factor you will receive an email notification, you don't need to do nothing. You can check the list of factors found so far in here:

http://www.leyland.vispa.com/numth/f...rogress_cw.txt

Thank you for reading this.

http://em99010pepe.googlepages.com/ecm_win_64.rar

Carlos Eduardo