20211125, 04:49  #716  
"Tucker Kao"
Jan 2020
Head Base M168202123
1240_{8} Posts 
Quote:


20211125, 05:34  #717  
Oct 2021
Germany
53_{8} Posts 
Quote:


20211125, 06:16  #718 
1976 Toyota Corona years forever!
"Wayne"
Nov 2006
Saskatchewan, Canada
4,999 Posts 

20211125, 07:59  #719  
"Viliam Furík"
Jul 2018
Martin, Slovakia
2·373 Posts 
Quote:


20211125, 14:11  #720 
"James Heinrich"
May 2004
exNorthern Ontario
7021_{8} Posts 
This is normal. When a composite factor is found, it is split into prime factors (which could take several seconds to process) and each prime factor is inserted into the database. An unfortunate sideeffect is that on primenet when the two prime factors are recorded, they're entered in the history log with the reported result line, which shows the composite factor rather than the prime factor being recorded. It's far from ideal, but it's the result of new things being hacked onto an old system that originally didn't consider that composite factors might be reported.

20211129, 20:45  #721  
"Seth"
Apr 2019
410_{10} Posts 
Quote:
I double checked ~100 exponents and found a small set of discrepancies for small results. https://www.mersenne.ca/exponent/97301 These all have a strictly large P1 done (B1=100M, B2=2000M). Code:
97301 0 67 16777216 1677721600 48.937 97327 0 67 16777216 1677721600 48.938 97381 0 67 16777216 1677721600 48.939 

20211129, 21:15  #722 
"James Heinrich"
May 2004
exNorthern Ontario
13·277 Posts 
It seems that the P1 probability algorithm breaks down somewhat when presented with extreme cases of exponent size, bounds, TF. I have fixed the 3 specific cases you listed, and if any other cases exist, they should be selffixed when an exponent page is loaded but the page will need to be reloaded to see the changed data, and a message is displayed to that effect (see attached).
Thanks for catching this. edit: I batch ran through 167 exponent in the 90100k range that had B1=2^24 so those ones should already be fixed. Last fiddled with by James Heinrich on 20211129 at 21:20 
20211208, 22:44  #723 
Oct 2021
U.S. / Maine
2^{2}×3×11 Posts 
mersenne.ca TF release levels inconsistent with mersenne.org "The Math" page
I was recently looking at M340705633 (from the strategic DC thread) on mersenne.ca (page), which says that the exponent's TF release levels are 2^{77} for PrimeNet and 2^{81} for GPU72. I checked the mersenne.org math page, though, and that seems to indicate that the PrimeNet TF release level is actually 2^{78} (and I understand that GPU72's release level is always ((PrimeNet release level) + 4), so that should then be 2^{82}). There's not a fluke error for this particular exponent because I checked out several others in the 340 M range and the same problem was present.
Were PrimeNet's release levels recently tweaked and mersenne.ca hasn't been updated to reflect this? If no, what else could the problem be here? 
20211208, 22:48  #724 
"Seth"
Apr 2019
2·5·41 Posts 
Another feature request to our intrepid leader, James, may he program forever.
is there any chance you can add a column on the status page for number of untested exponents (e.g. no LLR / PRP tests complete) https://www.mersenne.ca/status/tf/0/0/2/0 
20211209, 01:51  #725  
"James Heinrich"
May 2004
exNorthern Ontario
13×277 Posts 
Quote:
For reference, this is what's defined in commonc.h (lines 85100): Code:
#define FAC82 1071000000L #define FAC81 842000000L #define FAC80 662000000L #define FAC79 516800000L #define FAC78 408400000L #define FAC77 322100000L #define FAC76 253500000L #define FAC75 199500000L #define FAC74 153400000L #define FAC73 120000000L #define FAC72 96830000L #define FAC71 77910000L #define FAC70 60940000L #define FAC69 48800000L #define FAC68 38300000L #define FAC67 29690000L 

20211209, 02:06  #726  
"James Heinrich"
May 2004
exNorthern Ontario
13×277 Posts 
Quote:
I could potentially make use of the data here which is available in 1M granularity which means it would be meaningless on my charts on the two highest zoom levels. 

Thread Tools  
Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
Small inconsistencies between mersenne.org and mersenne.ca factor databases  GP2  mersenne.ca  44  20160619 19:29 
mersenne.ca (ex mersennearies.sili.net)  LaurV  mersenne.ca  8  20131125 21:01 
GaussianMersenne & EisensteinMersenne primes  siegert81  Math  2  20110919 17:36 
Mersenne Wiki: Improving the mersenne primes web site by FOSS methods  optim  PrimeNet  13  20040709 13:51 