20211116, 20:01  #397  
"Tucker Kao"
Jan 2020
Head Base M168202123
563 Posts 
Quote:
It turned out M168184123 and M168184823 were the correct exponents. F between 2^77 to 2^78 after NFPM1 with B1=1,000,000 and B2=40,000,000. The other had the result of FPM1 with a factor larger than 2^100. Since I already found what I've wanted, I'll trial factor the M168M lists to 2^77, run P1, then up to 2^79 as the roots. After I finish up the considerable amount of the exponents, then go up to 2^80 or higher if still no prime drops. Last fiddled with by tuckerkao on 20211116 at 20:12 

20211116, 21:55  #398 
If I May
"Chris Halsall"
Sep 2002
Barbados
2·5,021 Posts 

20211117, 00:13  #399  
"Tucker Kao"
Jan 2020
Head Base M168202123
563_{10} Posts 
Quote:
Glad I checked 3 different PCs, Nvidia Geforce 3080 Ti was only slightly faster but cost $600 more ($1600). The Geforce 3080 10GB I bought(my father paid it) cost $950 with the $50 discount from the regular price that day. Last fiddled with by tuckerkao on 20211117 at 00:19 

20211117, 02:28  #400  
If I May
"Chris Halsall"
Sep 2002
Barbados
2·5,021 Posts 
Quote:


20211119, 03:15  #401  
"Tucker Kao"
Jan 2020
Head Base M168202123
563 Posts 
SRBase reserved the exponents up to M162M yesterday, wish he can go a bit higher and faster. Most of the hopeful exponents must pass the checks up to 2^75.
I've finished the trial factoring of 2^73 to 2^74 for most of the exponents between M168,189,000 to M168,190,000, so they won't be locked down for at least a week  https://www.mersenne.org/report_expo...8190000&full=1 Quote:
Last fiddled with by tuckerkao on 20211119 at 03:36 

20211119, 10:57  #402 
"刀比日"
May 2018
ED_{16} Posts 
Out of only 11 palindromic prime exponents in the 168,xxx,xxx range (M168151861, M168191861, M168232861, M168404861, M168505861, M168515861, M168565861, M168818861, M168898861, M168929861, and M168949861), for just one (M168929861) the corresponding Mersenne number resists factorization so far. It is nice to see that tuckerkao started TF testing on it too.

20211122, 08:00  #403  
"Tucker Kao"
Jan 2020
Head Base M168202123
563 Posts 
Quote:
For every assignment, the user has to type in a command line such as "Factor=168173549,75,77" in worktodo.txt, then manually submit the result from results.txt to the Mersenne server using https://www.mersenne.org/manual_result/. mfaktc reads "Factor=168173549,75,77" as to run the trial factoring task for M168173549 from 2^{75} to 2^{77} Also accidental click on the command console can disrupt the trial factoring, so best to minimize it once it has started without the issues. Download page of the GPU trial factoring application  https://download.mersenne.ca/mfaktc/mfaktc0.21, cudart64_100.dll will also be required to placed in the same directory as mfaktc. Last fiddled with by tuckerkao on 20211122 at 08:06 

20211125, 09:29  #404 
"Tucker Kao"
Jan 2020
Head Base M168202123
563 Posts 
Dobri indeed hit an exponent with NFPM1, then a factor was found from the trial factoring of the highest bit level, unfortunately the PRP test was finished first on M140419663, thus no GHz Days were saved.
I already fully prepared M168285323, in case Dobri needs an exponent to run the PRP test. Last fiddled with by tuckerkao on 20211125 at 09:32 
20211125, 11:05  #405  
"刀比日"
May 2018
3·79 Posts 
Quote:
A similar problem occurred with M129091993 as no CERT file was generated. This was resolved by running a copy of the test files (preserved after reaching 90% of the test) on another computer and successfully generating a CERT file. 

20211125, 13:33  #406  
"Tucker Kao"
Jan 2020
Head Base M168202123
563 Posts 
Quote:
Looks like you've encountered the same problems as I did in M168286523, interim residue file reading error. Since the PRP test is very reliable when no Gerbicz errors detected, It's over 99.8% that the result is correct even without the proofs. 

20211126, 09:12  #407 
"Tucker Kao"
Jan 2020
Head Base M168202123
563_{10} Posts 
I guess that the algorithm Dobri has used seem to land on the exponents with the factors more frequently  M168322477, M168852323, M168999983, it's strongly recommended that her guesses be trial factored up to at least the GPU72 bit levels, perhaps even 1 bit higher if the GPU speed can accommodate.
Thanks a lot for ViliamF to work on the additional bits on M168285323, Dobri will feel more confident on running the PRP on it. 
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