20070821, 18:02  #12 
Apprentice Crank
Mar 2006
2·227 Posts 

20070823, 19:59  #13  
May 2007
Kansas; USA
27D8_{16} Posts 
Sieving software used for all TPS
Quote:
What I do is sieve each n to P=5G, which takes just over a minute on a highspeed machine, and then it automatically goes on to the next n. Unfortunately it creates one file per n so every 1000 n, I copy all 1000 files into one big sieve file and feed it to LLR. Fortunately LLR doesn't care if the T:0:2:3 line is embedded multiple times in the sieve. Thus the copy doesn't require any extra editing by me and the big file is only around 1112 MB for 1000 n. At P=5G for a range of k=1 to 1M for each n, it's removing candidates at about 0.80.9 sec. each. LLR at n=15K is taking about 0.4 secs. for each candidate so that's a little high to sieve but it will probably be pretty close as n approaches 20K. I also prefer to sieve a little too far instead of not far enough. Since it's not sieving the entire range at once like you're able to do for a fixed n search on the n=333333 TPS project, this is certainly not a particularly efficient approach but is the best that I could come up with for the time being. I thought of sieving for Riesel's, using the output to sieve for Proth's, and then LLR what is left but the files got very big real quick for such a large range of k, causing extra effort to have to split them up. What I really need is a combination of Srsieve for a multik search and NewPGen's TPS algorithm. If anyone can improve on my method here, I'm all ears! Gary 

20070924, 20:19  #14 
May 2007
Kansas; USA
10011111011000_{2} Posts 
TPS extended to n=17K to k < 1M
I had a request to post my latest on this effort. Attached is the RieselProth twin prime search up to n=17K for all k < 1M. There were 16 twins for 15K < n <= 17K for k < 1M. Two of them were k < 100K.
With this effort, I also tested all Riesel primes for k < 1M shown on the RPS site, i.e. www.15k.org, for Proth primes. The continuous tested ranges of k shown on one of the listings take this into account. No additional twins were found above what I've already found. I now have 2 highspeed cores LLRing up to n=20K. They should be done within a week and I'll post an updated list at that time. I tested all 16 new twins for 5 and +5 triplets. None were found. Gary 
20070928, 23:13  #15 
Jan 2005
Minsk, Belarus
110010000_{2} Posts 

20071008, 05:48  #16  
May 2007
Kansas; USA
2^{3}×3×5^{2}×17 Posts 
Quote:
If you know someone in the forum there, perhaps you could ask them to expand the list to include the first prime oddk for each n up to n=10K. That would be interesting to see. My LLR is up to n=20K for k < 1M now. See next post... Thanks for sharing! Gary 

20071008, 06:23  #17 
May 2007
Kansas; USA
2^{3}·3·5^{2}·17 Posts 
RieselProth TPS up to n=20K for k < 1M
Attached are RieselProth twin prime search lists up to n=20K for all k < 1M. There were 40 twins for 15K<n<=20K. A surprising 9 of them were for k < 100K.
I have also started a web page to list all of these twins. It's in its initial stages of creation. Right now, it only includes k's < 1M that have twins for 10K<=n<=20K and ALL twins for k<100K that has a twin for n>=10K. Eventually I will have all twins currently in the attachments here on the page. Here it is... gbarnes017.googlepages.com/twinsk11Mn10K20K.htm. Sieving is now complete up to n=25K and LLR has just begun. I'll continue posting in n=5K pieces until n=30K and then drop back to n=10K pieces after that. Gary 
20071010, 07:07  #18 
May 2007
Kansas; USA
27D8_{16} Posts 
New web pages for twins
The web page in the above message is no longer valid. I have now created two web pages that have all twins previously listed in the attachments in this thread. They are here:
http://www.noprimeleftbehind.net/gary/twins100K.htm http://www.noprimeleftbehind.net/gary/twins1M.htm A special thanks to Karsten Bonath (kar_bon) for helping out by writing a script to format the twins on the k<100K page. Gary Last fiddled with by Oddball on 20100522 at 21:25 
20071014, 14:22  #19  
Jan 2005
Minsk, Belarus
2^{4}×5^{2} Posts 
Quote:


20071015, 05:20  #20  
"Jason Goatcher"
Mar 2005
5×701 Posts 
Quote:
THIS SOUNDS LIKE A JOB FOR...PFGW!!! [/very masculine voice] Now, if I could just find my PFGW suit. It's got 'PFGW Man' written on the front, and it shows off my anatomy so well that I've been banned from wearing it in a few places. 

20071015, 05:46  #21  
May 2007
Kansas; USA
27D8_{16} Posts 
Quote:
Good one, Jasong! Had me rolling on the floor! I agree, PFGW would be excellent for creating such a list. Gary Last fiddled with by gd_barnes on 20071015 at 05:46 

20071015, 05:50  #22  
May 2007
Kansas; USA
2^{3}×3×5^{2}×17 Posts 
Quote:
Excellent! My goal with all of this is to have the most complete and accurate list of RieselProth twin primes anywhere on the web. The more information, the merrier! Gary 

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