20211212, 02:14  #1002  
1976 Toyota Corona years forever!
"Wayne"
Nov 2006
Saskatchewan, Canada
5181_{10} Posts 
Quote:
Statistically, Bounds of 3M/600M should give 123 factors. You need 119; that's cutting it close. Your two options then are higher bounds ... maybe 5M/1000M should give 144 factors. Or if you or someone takes it to 73 bits you should get 25 factors via TF. 

20211212, 02:28  #1003  
Oct 2021
Germany
2^{2}×5^{2} Posts 
Quote:


20211212, 03:18  #1004  
"Curtis"
Feb 2005
Riverside, CA
5,279 Posts 
Quote:
Perhaps those without 32GB+ ram should maybe not do the tough ranges, since they benefit so much from big memory? My timings are with 45GB assigned to P95 on a 64GB/socket machine. 

20211212, 03:55  #1005  
Oct 2021
Germany
64_{16} Posts 
Quote:
Last fiddled with by Luminescence on 20211212 at 03:56 

20211212, 04:15  #1006  
1976 Toyota Corona years forever!
"Wayne"
Nov 2006
Saskatchewan, Canada
3·11·157 Posts 
Quote:
I needed to pick a number for my spreadsheet to calculate the expected factors. On my i57820X (8 core) with 24GB RAM allocated GIMPS chooses 256x. 3M/600M (200x) is 8.62%, 123 expected factors and 19.8 GhzDays 3M/1200M (400x) is 9.38%, 139 expected factors and 38 GhzDays @Luminescence ... a little testing will tell you the B1/B2 you need for your desired percentages. 

20211212, 06:02  #1007 
Jun 2003
5×29×37 Posts 
I'm guessing 1.5m/1.2g (800x) should comfortably get the job done.
@Luminescence, how much RAM do you have in a single machine (if different amounts, what's the largest one)? 
20211212, 06:48  #1008 
Oct 2021
Germany
144_{8} Posts 
Three with 128GB total (don't know how much barebone server Ubuntu 20.04 requires) and one with 64GB (Win10, daily machine)
Last fiddled with by Luminescence on 20211212 at 06:56 
20211212, 07:01  #1009  
Jun 2003
5·29·37 Posts 
Quote:
Then probably 1m/2g (2000x) should be looked at. The windows machine (64GB) can do 1.5m/1.2g 

20211212, 13:11  #1010 
Romulan Interpreter
"name field"
Jun 2011
Thailand
9962_{10} Posts 
We are, for a little while, back to tickling 11M exponents with P1. Santa was nice this year.
Starting 11.2 and 11.0, in parallel. 
20211212, 13:16  #1011 
Aug 2002
Buenos Aires, Argentina
1,447 Posts 
After using 8 years a system based on i5 3470, this week I upgraded my desktop to i5 11400 with 32 GB of RAM.
I disabled the turbo boost because the CPU drains too many watts when running 100%, so the processor runs at 2.6 GHz. I populated Prime95 with the the list of worst ranges of P1 in 1010.9M from https://www.mersenne.ca/pm1_worst.php. I used the bounds 2M / 1288M (B2 was selected by Prime95). Each number requires 53 minutes. Up to this moment, Prime95 processed 51 numbers and it found only one factorization, M10938773, in step 1. I'm using Prime95 30.8 build 4. It uses 20 GB. Last fiddled with by alpertron on 20211212 at 13:22 
20211212, 15:05  #1012  
1976 Toyota Corona years forever!
"Wayne"
Nov 2006
Saskatchewan, Canada
3·11·157 Posts 
Quote:
Do I understand you are working on all of 10.0 to 10.9? 

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