20050215, 20:36  #12 
Nov 2004
California
2^{3}×3×71 Posts 
For comparison, I've sieved 515106735 for k=460k1M
up to 2.5T and still have 78,000 candidates. Larry 
20050216, 07:11  #13  
Mar 2004
Belgium
1517_{8} Posts 
Quote:


20050217, 07:56  #14  
Nov 2003
2×1,811 Posts 
Quote:
Quote:
Another possibility is to stop tests early. Indeed, there is nothing special about this k. No need to marry the first love 

20050217, 17:06  #15  
Mar 2004
Belgium
34F_{16} Posts 
Quote:
With resieve I mean: I have put 2 ranges together, to be absolute sure. I almost restart the sieve from scratch. Other point, per day I am eliminating approx 1900 factors. I'll keep this up until the find a factor rate will drop I am currently dividing the workload between 2 machines. The last point: I know that there are other K's to be searched but I really want to find some big primes. Ps. down to 98000+ tests. 3000 factors eliminated. Last fiddled with by ValerieVonck on 20050217 at 17:14 

20050217, 19:04  #16 
Nov 2004
California
2^{3}·3·71 Posts 
Sieving seems to be much more effective on my k=231. Sieving the
range n=400k1M only up to 137B leaves just 49,000 tests. 
20050217, 20:46  #17 
Mar 2004
Belgium
7×11^{2} Posts 
Isoule,
What is your sieving speed? Mine is P4 3 Ghz: 648 k P4 2.4Ghz: 484 k 
20050218, 00:48  #18 
Nov 2004
California
2^{3}×3×71 Posts 
For k=231, it looks like 629k/s on a P4 2.2GHz

20050218, 07:18  #19 
Mar 2004
Belgium
7·11^{2} Posts 
OK thank you.

20050220, 11:30  #20 
Mar 2004
Belgium
7·11^{2} Posts 
Currently testing the range 231K => 240k : 576 candidates on my P4 3G.
Continuing sieving the range 500G => 1T on my P4 2.4G. Last fiddled with by ValerieVonck on 20050220 at 11:30 
20050221, 17:05  #21 
Mar 2004
Belgium
34F_{16} Posts 
Range 230K => 240K done. No primes found
Range 240K => 250K currently testing  674 candidates Continuing sieving with lower bound 250k. 95886 candidates remaining 
20050223, 16:52  #22 
Mar 2004
Belgium
7·11^{2} Posts 
Range 240K => 250K done. No primes found
Range 250K => 280K currently testing  1997 candidates Continuing sieving with lower n bound 280k. 
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