20070123, 08:10  #100  
Jun 2003
3·23^{2} Posts 
Quote:


20070123, 16:22  #101  
Sep 2002
Database er0rr
5·829 Posts 
Quote:
Last fiddled with by paulunderwood on 20070123 at 16:28 

20070123, 21:15  #102 
Jun 2003
3·23^{2} Posts 
Will help soon! (As soon as I can free up a computer).

20070212, 12:01  #103  
Sep 2002
Database er0rr
5×829 Posts 
Thomas wrote:
Quote:
That is now 5 hours per test on a Pentium 4 at 3 GHz. Quicker on a Core 2 Duo. Last fiddled with by paulunderwood on 20070212 at 12:04 

20070212, 13:55  #104  
Feb 2003
2^{7}·3·5 Posts 
Quote:
The make the things even more complicated: We found LLR 3.5 slightly faster than the newer versions on the Athlons (a fraction of a percent). So the Athlon testers might use version 3.5 up to n=3171158 and then switch to version 3.6/3.6.2/3.7... 

20070226, 19:12  #105 
Sep 2002
Database er0rr
5×829 Posts 
Welcome back James!
I have asked Xyzzy to upload the next set of LLR input files, covering 3.15M to 3.3M bits, which will take us very close to 1 million digits (3.32M). Tests take nearly 6 hours each on a Pentium 4 at 2.66GHz. An average file will take 2 weeks  with 58 numbers. This will be the case until about 3.7M bits. Thanks to Geoff for the new sieve, which Carlos and Thomas used to get the least divisor up to 245 trillion. We are due to find a prime If we find a prime now it will be 12th largest known. Good luck all Last fiddled with by paulunderwood on 20070226 at 19:25 
20070227, 01:00  #106 
Jul 2003
72_{16} Posts 
Thanks Paul, it's good to be back.

20070322, 01:10  #107 
Sep 2002
Database er0rr
5·829 Posts 
I have just completed the last sub3 million bit 321 candidate. Great work people.
Our next goal is to reach 1 million decimal digits by the end of May. After reaching this mile stone I hope we find another prime quicky. In the long term, it would be great to get to 3.6 million by the end of this year and then a 4 million bits target for the end of 2008 will be easily attainable. Our next prime is due at 4.1 million bits. However we do not know where it actually is. It could be much smaller or much larger. Good luck all with finding our next 321 prime! 
20070503, 10:05  #108 
Sep 2002
Database er0rr
5×829 Posts 
It looks as though we will miss the endofMay target for all candidates below one million digits to be booked out, but we should easily get there by the end of June
For all 0<n<3M, Thomas and I have been testing preproject candidates or those missing numbers due to human error and those tested with PRP/PFGW, such that by the end of May we will have, uniformly, a divisor or a LLR residue My effort will slow down in the hot summer months, but hopefully with people being interested in finding a megaprime, the 3.6M goal is still on for the end of this year. Anyone who wants to make a start on megaprime tests should email me. Here are some relevant project links: Current status Prime Pages Bio for 321 Contributor Statistics Reservations Last fiddled with by paulunderwood on 20070520 at 17:57 
20070602, 21:33  #109 
Sep 2002
Database er0rr
5·829 Posts 
Thanks to Xyzzy for uploading the latest 321 input files ready for LLR crunching, covering from n=3.3M to 3.45M.
We are also grateful to Thomas for further sieving these to 271.2 trillion. This batch will take us over 1 million decimal digits (3.32M) Grab yourself some and maybe you will find a megaprime Also we have covered all n from 0 to 3M with a factor or an LLR residue. After some more analysis of errors, we will make all public... Last fiddled with by paulunderwood on 20070602 at 22:09 
20070711, 09:34  #110 
Sep 2002
Database er0rr
5·829 Posts 
We are now testing candidates for a prime number with over 1 million digits, a so called megaprime
Thanks to all who have helped over the last 4 years to get us here. Join us! Last fiddled with by paulunderwood on 20070711 at 09:35 
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