20081027, 01:53  #144 
I quite division it
"Chris"
Feb 2005
England
4035_{8} Posts 
9091 complete.

20081027, 11:02  #145 
I quite division it
"Chris"
Feb 2005
England
31×67 Posts 
39809884*3^91905+1 is prime.
9192 and 9293 complete. 
20081028, 22:03  #148 
I quite division it
"Chris"
Feb 2005
England
31·67 Posts 
35382962*3^93533+1
Is prime. 
20081029, 02:34  #150  
A Sunny Moo
Aug 2007
USA (GMT5)
3·2,083 Posts 
Quote:
Once he's finished sieving that, we'll be ready to start the second Sierp. base 3 minidrive. I was thinking that we should probably call it something like "Minidrive  Sierp base 3 (II)" to avoid confusion with this one (while still preserving this thread and its log of events). As for what exactly to put in the second minidrive: do you think we should do 50K150K (for a drive containing about as many k's as the Riesel base 3 minidrive), or should we do the whole 50K200K range all in one minidrive? 

20081029, 07:13  #151  
Quasi Admin Thing
May 2005
1110011011_{2} Posts 
Quote:
Regarding k>50M to k<=100M, it is sieving around 107G at the moment. It is removing 1 k/n pair for that range every 46130 seconds. If you can wait 4.3 days, then I'll have it taken to 150G, and it was never the intention nor does it look efficient to take it further than 150G in sieve. Hope this helped clear out some things KEP! 

20081029, 12:37  #152  
May 2007
Kansas; USA
27DB_{16} Posts 
Quote:
I assume you mean k=50M150M and 50M200M not 50K150K and 50K200K. (lol) Obviously you don't remember the first part of our Riesel base 3 mini drive very well. Doing a k=150M range for n=25K100K would be insane! You think a k=100M range was hard to administer at the lower nranges, try doing a k=150M range. Not a chance! Keep in mind I have to balance k's remaining on not just the krange being processed in post 1 of the thread for the drive but also on my web pages for all kranges for the base as well as list primes there, remove k's remaining, etc. Everything must balance and be in sync at nearly all times. First, we'll do k=50M100M for n=25K100K to get it 'on the same page' as the Riesel side. In the mean time, one person like me (when I free up a resource or 2) or anyone else who wants to volunteer for it, can run k=100M200M for n=25K35K or 25K40K. Later on, we can start a drive for that krange for n=35K (or 40K) to 100K. It's best that only one person or at most 2 do it. If that works out well, we'll plan on doing it that way for future mini drives. I have no desire to run a drive again with a k=100M range for n=25K100K. There are too many primes at the lower nranges for such a large krange. When ranges are completed out of order, it makes things difficult and extra CPU hours are used. One thing to remember though, we still have plenty of work on the Riesel base 3 drive for n=50K100K. Micha has sent me a sieved file for it and I think it's mostly sufficient for n=50K60K (while continuing to sieve n=60K100K) but I have to remove some k's yet and then divide it up into n=1K files. Also, I needed a break from that drive for a bit. I'll likely post more files some time on Friday after I'm back from my business trip. Let's think about getting the Riesel drive closer to n=70K or so before starting a Sierp base 3 drive II. I agree on making the Sierp drive a different thread and drive...as you indicated a 'II' prefix is good. After that, we'll do it in k=100M ranges adding one to a Romannumeral prefix each time. Gary Last fiddled with by gd_barnes on 20081029 at 12:52 

20081029, 12:49  #153  
May 2007
Kansas; USA
3·19·179 Posts 
Quote:
Yes, 150G is sufficient. We may sieve the n=50K100K part of it to 175G. You are also running k=100M200M at the same time...Is that correct? I'm asking because if not, it's more efficient for you to do so. Gary 

20081029, 13:43  #154  
Quasi Admin Thing
May 2005
1110011011_{2} Posts 
Quote:
Regards KEP 

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