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Old 2015-04-05, 07:12   #56
diep
 
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Thanks for the encouragement, much appreciated! I have each of the 24 cores that run do batches of 1000, so actually i'm already busy testing into the 4M range a tad. Up to 4.22M now. Within a few weeks that'll be 4.5M.

Yet will take 6+ months for the batches there to finish. If i keep 24 cores running then by end summer 2015 majority of the cores should be far over 4.5M with up to 4.5M nearly covered entirely.

If there is a prime within a few weeks, it's 50% odds it's > 4M. After that just 1 core out of 24 still searches < 4M.
About 3 months from now the last core should have finished < 4M range.
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Old 2015-04-05, 07:21   #57
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4.5M however if i divide it by the last prime found n=3140225

Then 4.5 / 3.14 = (roughly) 1.43x

Knowing it used to produce on average each factor 1.2 a prime, and not seldom 2 hide nearby, i hope that it still keeps going at 1.2x by then :)

Do not forget however how lucky i was when i started the formula, finding 3 primes and all 3 were at the start of a range of 1000 exponents that each core processes :)
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Old 2015-05-19, 20:19   #58
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Vincent,

Are you running the ranges manually or with prpnet/llrnet?

Carlos
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Old 2015-05-19, 20:36   #59
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Hello, i have no option but to run everything manual.

Machines that are networked here are getting hacked so terrible and i need to do the security on my own of them. So the only thing that has even remotely a chance of not crashing 20 times a day is by using airgapped machines. Also this linux machine which is on the internet crashes regular.

Fighting such systematic attacks that i get over the internet against my computers as i have IP number the same for 15 years now, is total impossible.

It takes me a lot of extra time - but that's how it is.

I have written several tools, recently one to split up ranges to many cores. If i start then the cores at the same time with a script they roughly also finish at same time finishing range.

That's very useful :)

So each 8 core Xeon here then is easier to maintain.

Before that i just used big batches that run for very long time and keep on back of an envelope an administration which core to regular check for being idle first :)

So with a few tools i split up the ranges into small files that get get started manual.

I'm searching in the 4.2 million now yet it'll take months for the slowest core to finish 4M. There is very little to check up to 4M though and i'm taking into account it's possible next 2 primes are around 4.5M. Will take some time until i'm there :)
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Old 2015-05-19, 20:40   #60
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So what's the gap to complete up to 4M? Can I be of assistance after I finish my current RPS Second Megabit Drive ranges? Please let me know.

Last fiddled with by pinhodecarlos on 2015-05-19 at 20:43
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Old 2015-05-19, 21:03   #61
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Feel welcome, i have about 12-24 cores that crunch at it (most of time 24 real cores).
Statistically spoken I'm closing in on 2 megaprimes so you could be very lucky even if you just crunch a handful of numbers :)
Please contact me in message or skype: diepchess
69 is very thick formula, about 55k each million to check.
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Old 2015-05-19, 21:07   #62
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Quote:
Originally Posted by diep View Post
Feel welcome, i have about 12-24 cores that crunch at it (most of time 24 real cores).
Statistically spoken I'm closing in on 2 megaprimes so you could be very lucky even if you just crunch a handful of numbers :)
Please contact me in message or skype: diepchess
69 is very thick formula, about 55k each million to check.
Thank you.
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Old 2018-04-15, 21:03   #63
diep
 
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We're searching with 2 persons now at 69. Seems there is gap after last one which is 69 * 2 ^ 3140225 - 1

We busy 5.5+ mln now and this is very fat weight.
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