20060506, 21:05  #12 
Mar 2005
Internet; Ukraine, Kiev
11·37 Posts 
biwema,
I'm now at p=20T. I'll start another sieving of [5e9; 25e9] and when it reaches 20T, I will merge them. I will start just now, so there is not much work to catch up. 
20060512, 19:10  #13 
Mar 2005
Internet; Ukraine, Kiev
11·37 Posts 
I have merged [150e6; 5e9] and [5e9; 25e9] this morning. Now the whole range [150e6; 25e9] is at p=21.4T, 10,947,000 k's left, rate is about 1 k/sec.

20060513, 02:43  #14  
Apprentice Crank
Mar 2006
2×227 Posts 
Quote:


20060516, 16:18  #15 
Mar 2005
Internet; Ukraine, Kiev
11·37 Posts 
I have released [150e6; 200e6] for LLR at p=30.6T. Now the range [200e6; 25e9] is at p=30.6T, 10,667,000 k's left, rate is ~1.41.6 k/sec.
MooooMoo's edit: The ranges are now in the "pre sieved range reservation thread". Last fiddled with by MooooMoo on 20060517 at 07:34 
20060530, 18:31  #16 
Mar 2005
Internet; Ukraine, Kiev
110010111_{2} Posts 
Now the range [250e6; 25e9] is at p=51.7T, 10,334,553 k's left, rate is ~2.52.7 k/sec.

20060603, 13:08  #17 
Mar 2005
Internet; Ukraine, Kiev
627_{8} Posts 
Now the range [250e6; 25e9] is at p=61.0T, 10,226,786 k's left, rate is ~2.52.7 k/sec.

20060611, 08:55  #18  
"Robert Gerbicz"
Oct 2005
Hungary
2·3·233 Posts 
Quote:
Code:
T=4.0;forprime(p=3,10^5,T*=(p2)/p/(11/p)^2);p=T*(195000*log(2))^2;\ forstep(i=5,50,5,print("k=",i," G ","chance of finding a twin: ",1(1p)^(i*10^9/2))) k=5 G chance of finding a twin: 0.3032663771235724704662848430 k=10 G chance of finding a twin: 0.5145622587534880610868001205 k=15 G chance of finding a twin: 0.6617792038603679416316561856 k=20 G chance of finding a twin: 0.7643501993734845214281243748 k=25 G chance of finding a twin: 0.8358148606793800287773442252 k=30 G chance of finding a twin: 0.8856066930586734521235834760 k=35 G chance of finding a twin: 0.9202983368219543694155290908 k=40 G chance of finding a twin: 0.9444691714646835051627448017 k=45 G chance of finding a twin: 0.9613098046532592367695271155 k=50 G chance of finding a twin: 0.9730432400262686098144673574 

20060611, 10:31  #19 
Mar 2004
381_{10} Posts 
Nice.
My Approach was slightly different: I was a bit afraid on how much the thiw is dependant on each other. Therefor I sieved a range of 10G to K=1T, and did the probability calculation with the number of remaining candidates to minimize the dependency. Ofcourse, this number has also a statistical distribution. 
20060613, 21:46  #20 
Mar 2005
Internet; Ukraine, Kiev
110010111_{2} Posts 
The range [300e6; 25e9] is at p=83.0T, 10,005,865 k's left, rate is ~5.08.0 sec/k.
Please excuse me, in posts #15, #16 and #17 I made a mistake: I wrote "k/sec", while it is "sec/k". 
20060614, 23:15  #21  
Mar 2004
3·127 Posts 
hi gribozavr,
Could it be, that you are quite unlucky? Quote:
Quote:
10667000 * (24.7G / 24.8G) * (Log2(30.6T) / Log2(83T))^2 = 9972751 Candidates, so there are 28500 Factors too few. Candidates * New Range * Newfactoring Depth ratio^twin Is there a flaw in my calculations? Edit: More detailed calculations with excel give: 3.06E+13 24.8 10667000 5.17E+13 24.75 10334553 10294806 39747 6.10E+13 24.75 10226768 10227121 353 8.30E+13 24.7 10005867 10010909 5042 from 30.6T to 51.7T 39747 too few factors; from 51.7T to 61T approx. correct from 61T to 83T 5000 too many Last fiddled with by biwema on 20060614 at 23:32 

20060624, 20:05  #22 
Mar 2005
Internet; Ukraine, Kiev
11·37 Posts 
The range [400e6; 25e9] is at p=101.1T, 9,849,791 k's left, rate is ~5.010.0 sec/k.
Sieving has passed 100T biwema, I'm intrested in this math, but I don't understand the "Newfactoring Depth ratio" part. Can you explain it to me, please? (I undersatnd that log2(x) is the number of bits in x) 
Thread Tools  
Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
S9 and general sieving discussion  Lennart  Conjectures 'R Us  31  20140914 15:14 
Sieving discussion thread  philmoore  Five or Bust  The Dual Sierpinski Problem  66  20100210 14:34 
Combined sieving discussion  ltd  Prime Sierpinski Project  76  20080725 11:44 
Sieving Discussion  ltd  Prime Sierpinski Project  26  20051101 07:45 
Sieving Discussion  R.D. Silverman  Factoring  7  20050930 12:57 