mersenneforum.org > Data COMPLETE!!!! Thinking out loud about getting under 20M unfactored exponents
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 2021-09-04, 11:31 #738 firejuggler     "Vincent" Apr 2010 Over the rainbow 5×569 Posts sure i'll take 6.2M for a spin
 2021-09-04, 13:11 #739 firejuggler     "Vincent" Apr 2010 Over the rainbow 284510 Posts and thank you for your detailled explanation.
2021-09-05, 04:44   #740
petrw1
1976 Toyota Corona years forever!

"Wayne"
Nov 2006

5,197 Posts

Quote:
 Originally Posted by firejuggler sure i'll take 6.2M for a spin
I see a few results coming in with two very different sets of B1/B2; one taking twice as many GhzDays with probably only an extra 1 percent success rate.

Code:
firejuggler	Maison	6263651	NF-PM1	2021-09-04 16:27	0.0	4.1311	B1=3000000, B2=243000000
firejuggler	Maison	6264023	NF-PM1	2021-09-04 19:27	0.0	4.1311	B1=3000000, B2=243000000
firejuggler	Maison	6264127	NF-PM1	2021-09-04 22:27	0.0	4.1311	B1=3000000, B2=243000000
firejuggler	Maison	6264367	NF-PM1	2021-09-05 00:11	0.0	1.9890	B1=3000000, B2=90000000
firejuggler	Maison	6264413	NF-PM1	2021-09-05 01:49	0.0	1.9890	B1=3000000, B2=90000000
firejuggler	Maison	6264617	NF-PM1	2021-09-05 03:19	0.0	1.9890	B1=3000000, B2=90000000
Is it possible that some are using PMINUS1 ... those with 3M/90M
and some are using PFACTOR those with 3M/243M

It is no problem using PFACTOR ... however if you want the same expected success rate you will need a lower B1.
That is because the newest version of PFACTOR that determines its own B2 tends to pick it many more multiples of B1.
If so and if you prefer PFACTOR experiment a bit with B1 so that the B2 chosen gives you about the same 6.64% success using: https://www.mersenne.ca/prob.php.
I might guess something closer to 2M instead of 3M.

Of course with your higher B2 you will certainly find the required factors with less exponents but the total GhzDays expended will be quite a bit more.

Thanks

2021-09-05, 05:30   #741
LaurV
Romulan Interpreter

"name field"
Jun 2011
Thailand

9,973 Posts

Quote:
 Originally Posted by petrw1 If you really don't...
Man, you almost beat me for the length of that post, hehe, did you meet kriesel for a beer over the weekend and he schooled you, or what?
Today and yesterday we only got T4 from Gugu (Pro_non_plus, and free instances), which suck at P-1, so we let them doing TF with Chris. We only found a single factor in 9.8M, which isn't much . We will continue to do that for a while, but mainly we will retreat from this project, as now all our local hardware is mining, and Gugu is taking our money for free, as currently, the only difference between the free instances and Pro instances is the running time. Seems they want to force us into paying for Pro-plus, but such budget we don't have yet. So, 11M is free for now, which will make Chris happy, so he has no reason to wonder anymore "why the 11M fixation"
For some reason I don't have access to my computer at work, possible server powered off due to long weekend, as here we'll have holiday on Monday. I wanted to post a summary for my 90-days activity - I mean, I was doing occasional work here before, but I joined this project more seriously on June 7, and there should be 90 days by today, good opportunity to celebrate, but also, in the light of my former post, to "retreat in glory". But that summary file is lost somewhere inside of the office computer, I will try to retrieve it if the server comes back, but if not, then see you on Tuesday, hehe.

Last fiddled with by LaurV on 2021-09-05 at 05:33

2021-09-05, 15:49   #742
petrw1
1976 Toyota Corona years forever!

"Wayne"
Nov 2006

5,197 Posts

Quote:
 Originally Posted by LaurV Man, you almost beat me for the length of that post, hehe, did you meet kriesel for a beer over the weekend and he schooled you, or what?
I have, on occasion been accused of having "verbal diarrhea".

We're sad to have you leave us though.
Thanks

2021-09-05, 22:50   #743
lycorn

"GIMFS"
Sep 2002
Oeiras, Portugal

22·32·43 Posts

Quote:
 Originally Posted by petrw1 We're sad to have you leave us though.
Hmmm. knowing LaurV I think this is more a "see you soon" than a "goodbye".
Hope I´m not mistaken, tho...

 2021-09-06, 21:06 #744 chalsall If I May     "Chris Halsall" Sep 2002 Barbados 22×5×17×31 Posts It's a bit like watching dueling banjos, only different... Wow, guys!!! Thanks (everyone)!
2021-09-07, 04:30   #745
petrw1
1976 Toyota Corona years forever!

"Wayne"
Nov 2006

121158 Posts

Quote:
 Originally Posted by chalsall It's a bit like watching dueling banjos, only different... Wow, guys!!! Thanks (everyone)!
TF74 started YAY!!
Just sayin' ... but ... you probably don't have to curate 22.8 or 23.3 to TF74
I think P1 can get these.

 2021-09-16, 00:18 #746 SethTro     "Seth" Apr 2019 19×23 Posts Anyone want to guess which will be the final range? My guess is one of 10.7M has 159 remaining, with average TF=71 (already more TF than 17.0M, but P-1 is faster) 15.5M has 153 remaining, with average TF=71.358 (with few low P-1) 17.0M has 173 remaining, with average TF=71.279 (expect have ~130 remaining at TF=73) 29.8M has 113 remaining, with average TF=74 Maybe 9.9M has 123 remaining, with average TF=71.02 (but 970 Low P-1) 20.8M has 143 remaining, with average TF=70.95 (expect more like 60 remaining by the time TF=73/74) 25.3M has 120 remaining, but slightly more low P-1 than 29.8 (and is faster)
2021-09-16, 04:13   #747
petrw1
1976 Toyota Corona years forever!

"Wayne"
Nov 2006

5,197 Posts

Quote:
 Originally Posted by SethTro Anyone want to guess which will be the final range? My guess is one of 10.7M has 159 remaining, with average TF=71 (already more TF than 17.0M, but P-1 is faster) 15.5M has 153 remaining, with average TF=71.358 (with few low P-1) 17.0M has 173 remaining, with average TF=71.279 (expect have ~130 remaining at TF=73) 29.8M has 113 remaining, with average TF=74 Maybe 9.9M has 123 remaining, with average TF=71.02 (but 970 Low P-1) 20.8M has 143 remaining, with average TF=70.95 (expect more like 60 remaining by the time TF=73/74) 25.3M has 120 remaining, but slightly more low P-1 than 29.8 (and is faster)
I am working 10M ranges at a time; easiest to hardest in each range.
Once I finish 3xM in a few months, I expect to spend at least 2 more years doing P1 in 2xM; ending with 29.8.

A couple entities are working low to high.
In that time period I am hopeful the "low-enders" can be getting close to 10M.

Then in the 1xM range I will probably end with 17.0.

Now I am secretly hoping (don't tell anyone) that someone takes it as a challenge to prove us all wrong and ambitiously take on all these hardest ranges.

My poster child is masser who took on 14.0 a few years ago when it was by far the worse with 297 factors remaining. He's getting close!!!

2021-09-16, 16:26   #748
masser

Jul 2003
Behind BB

1,907 Posts

Quote:
 Originally Posted by petrw1 Then in the 1xM range I will probably end with 17.0. Now I am secretly hoping (don't tell anyone) that someone takes it as a challenge to prove us all wrong and ambitiously take on all these hardest ranges. My poster child is masser who took on 14.0 a few years ago when it was by far the worse with 297 factors remaining. He's getting close!!!
It's been great fun! (I started when the range was at 2242 in late March 2020; a nice pandemic distraction)

My hunch is that 17.0 is the most difficult of the remaining dense ranges. The project certainly has the firepower to finish off this task: push the TF bit level to an extreme (like 74,75 bits) then P-1 with B1 = 10M ought to do it.

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