20210906, 10:35  #287 
"Alexander"
Nov 2008
The Alamo City
2F7_{16} Posts 
@tuckerkao If you're really desperate for a factor, a second P1 test to ridiculously high bounds will probably get you a better return than your repeated P+1 tests with the same bounds and different seeds.

20210907, 01:11  #288  
Mar 2019
C8_{16} Posts 
Quote:
You keep rambling about "dozenal math", your "skyscraper", etc. It's all just gibberish. There is no actual math to support the claim that your proposed exponent range is any more likely, or any less likely, to contain a Mersenne prime. My only hope is that others aren't led down this pointless crusade, and just keep their mprime / Prime95 clients receiving whatever assignments the server hands out. 

20210911, 03:46  #289  
"Tucker Kao"
Jan 2020
Head Base M168202123
111101111_{2} Posts 
Quote:
Nvidia Geforce Lovelace 4090 maybe the ideal model I want for the trial factoring which should be able to cover any available exponent choice on the Mersenne number list, the release date is Oct 2022 according to the link below  https://wccftech.com/nvidiageforce...launchrumor/ M168202123 should be finished in around 5 more hours including the proof file hashes. As soon as I get the PRP roof placed on the headquarter skyscraper with a certification, I'll run more P1 on other M168,***,*23 exponents. Quote:
I also trial factored up the 3 closest unfactored neighbors on each side of M168202123 up to 2^77, just in case the traffic get busy someday in the future  https://www.mersenne.org/report_expo...ll=1&ecmhist=1 By the way, I spent 15 hours to run 1 curve of ECM, so that my PRP test will for sure finish on Sep 11th  https://www.mersenne.org/report_expo...ll=1&ecmhist=1 Last fiddled with by tuckerkao on 20210911 at 04:29 

20210912, 00:55  #290  
"Tucker Kao"
Jan 2020
Head Base M168202123
3^{2}·5·11 Posts 
Quote:
For some reason, P1 with B1=1,000,000 and B2 = 40,000,000 for M168,***,*23 only take around 14 hours each to complete instead of 22 hours several months ago. This is really a big help. The exponents I've worked up recently  M168199123: NF to 2^77 and NFPM1 M168217123: NF to 2^77 and NFPM1 M168243223: NF to 2^77 and NFPM1 New PRPReady Exponents since 08/04/2021: M168020323, M168133123, M168175123, M168207223, M168221023, M168227023, M168922123, M168932123, M168934123 Previous PRPReady Exponents: M168314323, M168412723, M168424723, M168479323, M168704323, M168779323 It was really a big grace that Borek Boissy picked up M168174323 and its PRP result will be revealed in around 5~6 more days. There must be something I didn't work efficiently before Aug 2021, but suddenly got it correct by coincidence since the beginning of this August. Last fiddled with by tuckerkao on 20210912 at 01:03 

20210912, 01:15  #291 
If I May
"Chris Halsall"
Sep 2002
Barbados
23×433 Posts 

20210912, 08:39  #292 
"TF79LL86GIMPS96gpu17"
Mar 2017
US midwest
5·19·61 Posts 
From prime95's whatsnew.txt:
Code:
New features in Version 30.4/30.5 of prime95.exe  1) Faster P1 stage 2. 2) Faster ECM stage 1 and stage 2. 3) Gwnum library overhauled. Many functions deprecated. Replaced by more powerful gwmul3. New functions that compute (a+b)*c and (ab)*c with less memory accesses. Faster conversion to and from binary. 4) ECM and P1 can find the best B2 value for the amount of memory prime95 is allowed to use. For ECM, this happens when the worktodo.txt line sets B2=100*B1 which is the default assignment from the PrimeNet server. For P1, the best B2 is chosen when the worktodo.txt line specifies the trial factoring depth. For example, "Pminus1=1,2,20000003,1,500000,0,70" chooses the best B2 bound for B1=500000 given that M20000003 has been trial factored to 2^70. 
20210912, 19:14  #293  
"Oliver"
Sep 2017
Porta Westfalica, DE
5·7·19 Posts 
Quote:


20210912, 23:59  #294 
"Viliam Furík"
Jul 2018
Martin, Slovakia
2×11×31 Posts 
We have literally the same saying here, in Slovakia. I am not sure, whether we got it from German language (this is a rather likely scenario, given the history of Slovakia  during the Hungarian rule period, most of the intellectuals here were from Germany, Austria, and such), or it's from a common source. I'll look into it someday.

20210915, 02:50  #295 
Romulan Interpreter
Jun 2011
Thailand
10011000111010_{2} Posts 
We have it the same, except is a crow on the fence, not a pigeon on the roof, and as I guess, it is either of Latin, Slavic, or Turkish (Ottoman) origin.
Last fiddled with by LaurV on 20210915 at 02:51 
20210918, 06:11  #296  
"Tucker Kao"
Jan 2020
Head Base M168202123
3^{2}·5·11 Posts 
Quote:
New PRP Ready Exponents since 09/11/2021: M168217123, M168316123, M168612823, M168731923 Last fiddled with by tuckerkao on 20210918 at 06:13 

20210921, 00:16  #297  
"Tucker Kao"
Jan 2020
Head Base M168202123
495_{10} Posts 
Quote:
M168174323 locates too far away from M168173321 and has other unfactorable exponents (NF up to 2^82 and NFPM1 with B1 = 2,800,000 and B2 = 120,000,000) in between the 2 specified exponents. Having a median factored M168,***,*23 exponent which is M168173323 is another issue. There are no other unfactorable exponents in between M168620423 and M168620321 which makes me think this dozenal Ɛ ender candidate will be worth a PRP try. M168620423 > Z4857931Ɛ also dozenally has all odd digits in the sequential orders for the last 6 digits, thus easy to remember. There still other exponents that may fit this characteristic. Quote:
P1 with B1 = 2,800,000 and B2 = 120,000,000 for M168620423: 90.64 GHz days, completed on my CPU in around 1 day and 16 hours. Quote:
I found 8 new factors during Aug 2021, however 0 in Sep 2021 so far. Last fiddled with by tuckerkao on 20210921 at 00:56 

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