20180405, 15:53  #12  
Jul 2004
Milan, Ita
3×61 Posts 
Quote:
No need to split hairs, since this is a filler job for me, but  using mersenne.ca's p1 prob estimator  those cands had former B1/B2's corresponding to a prob level around 1.5%, and I brought them around 4%  hence my disappointment. As a more general point, I've been playing this "filler game" for quite some time now, and I've as well experienced an average of 34% of successes on average. For sure, when TF levels were lower, 'twas much more rewarding :) 

20180405, 16:10  #13  
If I May
"Chris Halsall"
Sep 2002
Barbados
7×1,361 Posts 
Quote:
Statistics has no memory. Run an infinite number of tests and you should see about a 2.5% success rate... 

20180415, 04:16  #14  
1976 Toyota Corona years forever!
"Wayne"
Nov 2006
Saskatchewan, Canada
2^{3}·5^{2}·23 Posts 
Quote:
But then I got to thinking that when I have 2 workers instead of 4; not only do they each get twice the RAM per Stage 2...but (and I know almost nothing about this) ... I believe that at some point of extra RAM for Stage 2 Brent Suyama kicks in and my E=3 or E=6 or E=12 increases the odds of finding a factor. Am I anywhere close on this...and can someone tell me how much of an increase the E=3 or E=6 or E=12 gives me? Maybe enough that I can swallow the 5% thruput loss. Thanks 

20180608, 20:52  #15  
1976 Toyota Corona years forever!
"Wayne"
Nov 2006
Saskatchewan, Canada
2^{3}·5^{2}·23 Posts 
Quote:
Subtracting the expected factor ratio of the prior run from my run comes out close to 3%. After more than 5,100 of such tests my overall success rate is currently 2.98% In the extremes I once saw consecutive Factors and six times 2 factors out of 3 attempts (on the low end) AND 169 and 183 attempts between factors (on the high end). My perPC success rates range from 2.12% to 3.39% among PCs that have done more than 600. 

20181108, 01:56  #16 
1976 Toyota Corona years forever!
"Wayne"
Nov 2006
Saskatchewan, Canada
2^{3}·5^{2}·23 Posts 
I am now "reserving" P1 work in the following ranges:
48.6 48.7 46.7 48.3 47.2 
20190616, 23:47  #17 
Bemusing Prompter
"Danny"
Dec 2002
California
2^{3}·3^{3}·11 Posts 
I'm redoing P1 on exponents in the [20m, 20.05m] range where B2 < 2,500,000.
Last fiddled with by ixfd64 on 20190616 at 23:48 
20190617, 03:29  #18 
1976 Toyota Corona years forever!
"Wayne"
Nov 2006
Saskatchewan, Canada
2^{3}·5^{2}·23 Posts 
Continuing P1 where B1=B2 in all 4xM ranges that have more than 2000 unfactored

20190624, 16:44  #19 
Bemusing Prompter
"Danny"
Dec 2002
California
948_{16} Posts 
I have another PC running P1 on exponents in the [57m, 57.1m] range.
Last fiddled with by ixfd64 on 20190826 at 17:39 
20190926, 23:37  #20 
Jul 2003
wear a mask
2·5·157 Posts 
I'm running P1 with larger bounds on exponents in the 2.6M and 2.8M ranges.
Last fiddled with by masser on 20190926 at 23:37 
20191002, 22:04  #21 
Bemusing Prompter
"Danny"
Dec 2002
California
2^{3}·3^{3}·11 Posts 
I'm currently redoing P1 on exponents from 14.4m to 14.5m with B2 < 2,000,000.

20191113, 15:10  #22  
Jul 2003
wear a mask
2×5×157 Posts 
Quote:
After I complete my first pass over 2.6M, I plan to do a second pass over 2.6M and 2.8M. Anyone have a suggestion for how much to increase the bounds for a second pass of P1 factoring? I was thinking that I would use the probability calculator at mersenne.ca; currently I'm putting in about 0.5 GhzD/exponent. For the second pass, I thought I would increase that to 0.75 GhzD/exponent and use bounds that approx. maximize the probability of finding a factor. 

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