Treading LL P-1 for 100M TF - Page 5

davieddy · 2013-04-05, 06:46

Quote:

Originally Posted by davieddy

There are currently about 300 LL completions a day. (V good news).

I didn't have to be especially eagle-eyed to field this one: several familiar numbers go hand in hand with this measure of GIMPS progress, and I find the cross-checks invaluable.

Each 1M advance in the LL wave (~60M) involves ~20,000 LLtests.
So the wave is advancing at about 10% per year.
1.1⁴ = 1.46 and this is the average gap between primes.
"Expected New Primes" is decreasing at the rate of 1 every 4 years.
The probability of one LL test yielding a prime is 1/(4*365*300) = 1/438,000 which is typical of what Prime95 tells us for the range in which LLs are being completed.

Sustaining this 10% advance per year needs a 4/3 increase in computing per year. This a modest request of "Moore's Law", so Curtis Cooper was wrong to expect increasing time gaps between primes in the foreseeable future.

D

Uncwilly · 2013-04-05, 23:57

Quote:

Originally Posted by Uncwilly

So I am now at 21 GHz-days. And stage 1 found a factor that is in the 83 bit range.

And just got a 78 bit factor for another number!

Aramis Wyler · 2013-04-06, 03:28

P-1, winning!

Aren't you glad you're doing them? Saved a couple people a month.

That other number finished to 79 today with no factors.

Axelsson · 2013-04-06, 10:39

Quote:

Originally Posted by chalsall

We geeks regularly use MB (Million Bytes); Mb (Million bits)... "M" didn't work for me for thousands...

I think we've found an acceptable solution.

As a geek and engineer I just wonder why not use 10^2 10^3 ... and so on, works in every language and for a very long time.

Göran

Dubslow · 2013-04-06, 18:35

Quote:

Originally Posted by Axelsson

As a geek and engineer I just wonder why not use 10^2 10^3 ... and so on, works in every language and for a very long time.

Göran

kladner · 2013-04-06, 23:45

@ Uncwilly- 33231xxxx has about 8.5 hours to go to 79. I'll try to work other such runs in every few days. If it is of any value to you, I'll PM the entire number.

kracker · 2013-04-07, 00:59

I took 2 332M exp.s to 78 and will finish soon, would have done to 79, but my gpu is slow.... would take about 2.5 days to get one to 79

kladner · 2013-04-07, 01:35

Quote:

Originally Posted by kracker

I took 2 332M exp.s to 78 and will finish soon, would have done to 79, but my gpu is slow.... would take about 2.5 days to get one to 79

It's not a trivial undertaking for me. 78-79 takes roughly 12 hours on an OC'd GTX 570. The work saved if I find a factor is gratifying, though.

Jayder · 2013-04-07, 06:00

It took me a month and a half to take a 332M from 79-80. Never again.

Uncwilly · 2013-04-07, 06:05

Quote:

Originally Posted by kladner

If it is of any value to you, I'll PM the entire number.

As long as it gets reported to PrimeNet, I am fine. I trust all y'all. I should have 49 GHz-days of P-1 finished since the deal came into effect it about 3.5 hours from now (14 total assignments). PrimeNet will be notified in about 7-10 hours from now.
My remote borg should turn in one more by that time too.

kracker · 2013-04-07, 15:02

If only they all came like this:

2013-04-07, 15:02	#55
kracker "Mr. Meeseeks" Jan 2012 California, USA 2168₁₀ Posts	If only they all came like this: Attached Thumbnails

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2013-04-06, 03:28	#47
Aramis Wyler "Bill Staffen" Jan 2013 Pittsburgh, PA, USA 2³×53 Posts	P-1, winning! Aren't you glad you're doing them? Saved a couple people a month. That other number finished to 79 today with no factors.

2013-04-06, 23:45	#50
kladner "Kieren" Jul 2011 In My Own Galaxy! 2·3·1,693 Posts	@ Uncwilly- 33231xxxx has about 8.5 hours to go to 79. I'll try to work other such runs in every few days. If it is of any value to you, I'll PM the entire number.

2013-04-07, 00:59	#51
kracker "Mr. Meeseeks" Jan 2012 California, USA 2168₁₀ Posts	I took 2 332M exp.s to 78 and will finish soon, would have done to 79, but my gpu is slow.... would take about 2.5 days to get one to 79

2013-04-07, 06:00	#53
Jayder Dec 2012 426₈ Posts	It took me a month and a half to take a 332M from 79-80. Never again.