20191213, 23:38  #1 
"mrh"
Oct 2018
Temecula, ca
5×11 Posts 
Unlucky factoring?
Since 4Oct I've completed 195 TF, P1 and ECM runs, totaling over 5,600 ghzdays, with out finding a factor. I'm glad I don't wager in Vegas...

20191213, 23:43  #2  
1976 Toyota Corona years forever!
"Wayne"
Nov 2006
Saskatchewan, Canada
2·5·7·61 Posts 
Quote:
My record (and I'm sure I'm not first) is over 500 TF without a factor. However my lifetime average is about 1/100. 

20191214, 12:31  #3 
Nov 2008
7×71 Posts 

20191214, 20:02  #5  
Feb 2005
Colorado
431 Posts 
Quote:
https://www.mersenne.org/report_expo...lo=3467&full=1 

20191215, 00:10  #6  
"mrh"
Oct 2018
Temecula, ca
5×11 Posts 
Quote:


20191217, 16:28  #8 
Random Account
Aug 2009
U.S.A.
1109_{10} Posts 
The truth about ECM's. Lifetime, I have found 20 factors in 15,140 attempts. This is 0.13%.

20191217, 17:26  #9  
1976 Toyota Corona years forever!
"Wayne"
Nov 2006
Saskatchewan, Canada
2·5·7·61 Posts 
Quote:
When I run ECM I will often edit the worktodo.txt and increase the curves to at least 10; sometimes 50 or more. With that I have an almost 1% success rate. 

20191217, 19:26  #10 
Random Account
Aug 2009
U.S.A.
1,109 Posts 
For many years, I used what the server gave me. I really did not study the worktodo format until a few years ago. With this in mind, the vast majority of what I ran was three curves. I still do this with my Linux system. I allow mprime to run them as presented. I have ran higher curve counts on my Windows system. Most of these were preps for GMPECM. I stopped doing this. GMPECM's results format is totally not compatible with Primenet.

20191217, 22:52  #11 
1976 Toyota Corona years forever!
"Wayne"
Nov 2006
Saskatchewan, Canada
4270_{10} Posts 
This is beyond believable bad luck
https://www.mersenne.ca/status/tf/0/365/4/90000
1 full year of progress. 900.0 has over 2,000 exponents TF'd from 71 to 80 with 1 factor reported. We would expect about 200. 900.1 has over 2,000 exponents TF'd from 71 to 80 or 82 with 7 factors reported. We would expect over 200. I don't believe the factors were simply reported prior to 1 year ago because the remaining unfactored count is much too high. 
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