As an optismist, I started a preliminary sieve from 2M to 10M
(My memory wouldn't hold much more...)

I think I won't be spending too much time on it for now, but it's nice to have a starter :>
I'll let srsieve finish upto 5G at least, and I reckon I will let it rest for a while then... With some 100k's eliminated it'll shave some time off... and some database size too

With resources as we have now, when is the ETA for completing the range upto 2M? (With each k eliminated it will all go quicker...)

[QUOTE=michaf;87595]As an optismist, I started a preliminary sieve from 2M to 10M
(My memory wouldn't hold much more...)

I think I won't be spending too much time on it for now, but it's nice to have a starter :>
I'll let srsieve finish upto 5G at least, and I reckon I will let it rest for a while then... With some 100k's eliminated it'll shave some time off... and some database size too[/QUOTE]
Me thinks, that range is a bit too much :wink: My grand master plan was to wait till PRP reaches somewhere around n=1.8 million and then start sieving a new range from 2 mil to 5 mil (yes, only a 3 million range).

[QUOTE=michaf;87595]With resources as we have now, when is the ETA for completing the range upto 2M? (With each k eliminated it will all go quicker...)[/QUOTE]
At the current rate? 3470.:whistle:

Years, that is, not days :down: Even with k's eliminated, we might do it in, say, 1500 years.

Ooohh... only 1500 years...

* add in new members, say 10 members extra, make that 500 years
* add in Moore's law, new computers, make that half every 2 years...
* that's 249 years in 2008
* that's 124 years in 2010
* that's 61 years in 2012
* that's 30 years in 2014
* that's 14 years in 2016
* that's 6 years in 2018
* that's 2 years in 2020

So... around 2022 we'll have this range finished...

Anyone knows the average hard-drive life-span? since I need to be holding onto my file quite a long time...

I'll let it finish to 5G and then make very sure not to touch again :)

[QUOTE=michaf;87515]
Oh, and one other thing, is there a known limit to which we can/must sieve, or will we simply not reach a point where sieving is slower than prp'ing?
[/QUOTE]

Any idea on this one?

[QUOTE=michaf;87608]Any idea on this one?[/QUOTE]

As far as I know, sieving can't keep up with LLR and it hardly ever becomes slower than PRPing. This is mainly due to the fact that time for LLRing increases so drastically as n increases while the factor density doesn't decrease so rapidly. Though I think for this project at the current level with so many k's, it is very important to LLR as we can get rid of many k quickly.

jaat

31342*5^102551-1 is prime!
 

Congrats to ltd!

31342*5^102551-1 is prime!

A new 298-k dat file is on its way.

276158*5^102964-1 is prime!
 

Congrats to arminius on the latest prime!

276158*5^102964-1 is prime!

can those primes - before posted here - be seen anywhere? or is that just possible on server's side? there are not real-time in the stats.

If you are lucky enough to find one, you can see them in your own files; but you'll have to check manually.
The primes need to be checked if they are 'real' primes, and then the dbase is updated.

In short, the answer is 'no'.

[url=http://primes.utm.edu/primes/page.php?id=78574]158696*5^163207+1[/url] is prime!

[URL="http://primes.utm.edu/primes/page.php?id=78592"]139784*5^110269+1[/URL] is prime.

First Top 5000 prime from LLRNet.