20211216, 17:28  #23  
"James Heinrich"
May 2004
exNorthern Ontario
2×3×7×97 Posts 
Quote:
Last fiddled with by James Heinrich on 20211216 at 17:30 

20211216, 18:17  #24 
"Lisander Viaene"
Oct 2020
Belgium
2×5×11 Posts 
https://www.mersenne.ca/exponent/5003
https://www.mersenne.ca/prob.php?exponent=5003&ecmtlevel=33.639&b1=5000000000&b2=4.4190835712423E%2B15 Do these values make sense? This is an example of stage 2 completed on 30.8b5 
20211216, 18:44  #25 
"Vincent"
Apr 2010
Over the rainbow
B44_{16} Posts 
What do you consider a low exponent?
Because today, I found a rather big one. M8538269 has a 129.728bit (40digit) factor: 1127043861162808113814773315610463390639 (P1,B1=1000000,B2=330325710) 
20211216, 18:50  #26  
"Lisander Viaene"
Oct 2020
Belgium
2×5×11 Posts 
Quote:


20211216, 18:53  #27  
P90 years forever!
Aug 2002
Yeehaw, FL
2^{3}×1,019 Posts 
Quote:
Here's some good news. You can check if your save files are good. Create a worktodo.txt entry with a slightly larger B1 and no known factors. Let 30.7b9 run that and see if it finds some or all of the known factors. I think you'll find you're in good shape. Example: Pminus1=N/A,1,2,5003,1,200000999,200000999 

20211216, 18:55  #28 
P90 years forever!
Aug 2002
Yeehaw, FL
1FD8_{16} Posts 

20211216, 18:59  #29  
Apr 2020
1633_{8} Posts 
Quote:
Looking at the sizes of the known factors, I'd say all exponents up to ~7500 have probably had at least a t45 (maybe even t50) from Ryan Propper. Ryan doesn't seem to have done any work from 770010000 so if I were you I'd focus your efforts there. Last fiddled with by charybdis on 20211216 at 19:02 

20211216, 19:03  #30  
"Lisander Viaene"
Oct 2020
Belgium
156_{8} Posts 
Quote:
I used the following worktodo entry as suggested: Pminus1=N/A,1,2,5903,1,200000999,200000999 Copied save file for 5903 from 30.8b5 to 30.7b9. And Prime95 turned it into a 'bad' save file. Last fiddled with by lisanderke on 20211216 at 19:07 

20211216, 19:11  #31  
"Lisander Viaene"
Oct 2020
Belgium
2·5·11 Posts 
Quote:
Thank you for the insights! Before I move on from the 5k range, though, let me try wrap my head around this: Let's assume B1=4e12 (as suggested by Zhangrc, no clue what the runtime for B1 would be) and B2=800K times 4e12, and Tlevel = 50, we have this calculation https://www.mersenne.ca/prob.php?exp...0&b2=3.2E%2B18 That seems a lot of effort for a very low chance of finding a factor. Last fiddled with by lisanderke on 20211216 at 19:11 

20211216, 19:34  #32  
Apr 2020
13×71 Posts 
Quote:


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