20150815, 19:28  #2322 
Sep 2011
Germany
101010011110_{2} Posts 
Reserving S708 to n=100k (25100k) for BOINC
Last fiddled with by rebirther on 20150815 at 19:41 
20150815, 20:18  #2323 
Dec 2011
After milion nines:)
5×281 Posts 
S808
Reserving S808 as new up to 25K

20150816, 08:46  #2324  
May 2007
Kansas; USA
10307_{10} Posts 
Quote:
I found it highly unlikely that there would be only 49 k's remaining at n=25K for S708 because I had run this base to n=2500 in the recommended bases thread. There were 701 k's remaining at n=2500! That is far too large of a reduction so I began checking the primes file. There are many composites. In the first 1000 k's, here is a balancing of what I found: 845 primes shown in file 163 were actually composite 682 true primes Attached is my PFGW run showing 163 composites. I ran my old reliable PFGW 3.3.6 against the primes file. I independently checked 3040 of the composites at the factoring db. All had factors. The most surprising of all was the very first one: 2*708^1+1 = 13 * 109 (!!??) Besides the first one, it appears that all of the remaining composites are from n=7 to 50. Many of the k's with composites would prime at larger nvalues n<25K but not all. With > 700 k's remaining at n=2500, there should likely be 200300 k's remaining at n=25K. Mark, I am concerned about the continual corrections to srbsieve that I am seeing in the "Testing new Ranges for Sierpinski/Riesel" thread. We cannot "test in production" on this project. We need independent parallel tests run on many different bases before bases are submitted for work here. I am not convinced that that is happening. (I did it myself on base 3 and it looked good.) My question is: Is this an srbsieve issue or are the users not using it properly or do they have possible bad versions of NewPGen, PFGW, LLR, or srsieve in their folder when running the program? For people who have been at CRUS < 1 year, I would prefer it if they would work with people who have more experience with the project when running new bases. Starting new bases is the most challenging thing that we do here. S708 did not pass the smell test. 49 k's remaining is very unlikely for such a high base with such a high conjecture and should have been independently verified. Last fiddled with by gd_barnes on 20150816 at 09:42 

20150816, 09:21  #2325 
Sep 2011
Germany
2718_{10} Posts 
ok, thats very bad. I have cancelled the base S708.

20150816, 09:25  #2326 
May 2007
Kansas; USA
11×937 Posts 
For independent verification of S708, attached are all primes and k's remaining at n=2500. Also included is the starting bases script that I used.

20150816, 09:56  #2327 
Dec 2011
After milion nines:)
5×281 Posts 
Thanks for warning. All is stopped!

20150816, 14:11  #2328 
I moo ablest echo power!
May 2013
1,741 Posts 
If I am currently running with pfgw (since srbsieve was having the checkpointing problem), can I continue on the ones I started? I'm also willing to verify the "primes" in pl_prime to confirm that they are actually primes. And if any turn out not to be, I can rerun that particular k up to the same n as the others.
If, however, that's not acceptable, please let me know and I'll stop. Edit: Nevermind, I saw your request for the newbase script results as well, so I'll just do that to try and verify. Last fiddled with by wombatman on 20150816 at 14:17 
20150816, 14:21  #2329  
"Mark"
Apr 2003
Between here and the
5·1,249 Posts 
Quote:


20150817, 03:10  #2330 
Jun 2008
Wollongong, .au
3·61 Posts 
Starting R576 from new using the NewBases v4.3 script. CK is 30651.

20150817, 06:13  #2331  
May 2008
Wilmington, DE
2^{2}·23·31 Posts 
Quote:


20150817, 06:15  #2332 
Jun 2008
Wollongong, .au
3×61 Posts 
Curses and phooey. Yes, S576. Thankfully it was churning away for <3 hours. I can't edit my original post, so let's say that I'm taking S576 from new with the NewBases script. AFAICS it's the lowest CK unstarted.
Last fiddled with by paleseptember on 20150817 at 06:18 
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