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Old 2008-03-08, 17:01   #34
em99010pepe
 
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276-278 done
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Old 2008-03-08, 18:33   #35
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Quote:
Originally Posted by Mini-Geek View Post
How were these known primes found previously? Fixed k or fixed n searches, that just happen to slightly overlap with NPLB's searches?
Most of them were fixed k searches at the Primesearch site. Some were fixed k searches at Riesel Prime Search and a few here-and-there were people randomly searching where they felt like it. See the 'Come join us' thread first post for a link to the Primesearch site.

k=300-400 had been previously searched much more than k=400-1001. For this reason, when I concieved of the project, I was not even going to consider k=300-400. About halfway through my sieving of k=400-1001, I began to have second thoughts about it. When I found out that Karsten was also sieving many of the k=300-400 k's, that clinched the decision to do it after getting k=400-1001 started. Not doing k=300-400 would leave a number of nice primes behind. Also, being a lower k-range, the LLR fftlen will increase at deeper n-levels, allowing deeper searches at less CPU time.

The final kicker was when I realized there were ZERO known primes for n>600K for k=300-400, which lead me to sieve n=260K-1M all at the same time, which is why sieving of k=300-400 for n=600K-1M will be done in < 3 weeks.

I think it will be very exciting picking off n>600K primes as well as n>400K primes at the same time for the 2 different k-ranges of the project. Our 'score' on the top-5000 site will increase much more rapidly. We're now in 12th place there and it's a very long way to 11th place.


Gary

Last fiddled with by gd_barnes on 2008-03-08 at 18:34
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Old 2008-03-08, 18:37   #36
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Quote:
Originally Posted by em99010pepe View Post
Gary, I moved 5 cores to clean 260k-280k in 3-4 days I suppose but then I need to finish my other range from team drive 2. My progress is something like this: 276-280 50% done; 260-276 25% done. After I'll stay here to help and I hope with a new quad-core.

Carlos
Great! Sounds good. I'm glad you're holding off on reserving them for just a little while here. If some others reserve some, I'll post more if you need them.
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Old 2008-03-08, 18:51   #37
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340K-353.2K completed by IronBits' port 5000 LLRnet server. Lresults sent to Gary (too big to post here).
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Old 2008-03-09, 23:11   #38
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260-268 done.
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Old 2008-03-10, 13:16   #39
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taking 400-402
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Old 2008-03-10, 13:41   #40
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Gary I think you forgot my confirmed prime when you updated
395*2^379448-1
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Old 2008-03-10, 18:20   #41
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Taking 402-404...starting to deploy all cores in here..lol
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Old 2008-03-10, 18:25   #42
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Quote:
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Gary I think you forgot my confirmed prime when you updated
395*2^379448-1
Okay, I took care of it.
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Old 2008-03-10, 19:38   #43
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Taking 404-406.
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Old 2008-03-10, 20:42   #44
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Gary, please add more files. Thanks.
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