I parse Rodrigo's message as
"that is, doing LL almost exclusively" ([I]stop[/I])
"instead of TF on highly productive graphics cards" ([I]the latter of course is implied to produce a lot of credit[/I]).

[QUOTE=Rodrigo;327953]Anybody know how many PCs they have on their farm?[/QUOTE]
According to what I believe is [URL="http://web.archive.org/web/20120629150932/http://www.math-cs.ucmo.edu/~gimps/gimps"]Curtis Cooper's site[/URL], more than 850. Now, how often are they turned on?

[QUOTE=Batalov;327966]I parse Rodrigo's message as
"that is, doing LL almost exclusively" ([I]stop[/I])
"instead of TF on highly productive graphics cards" ([I]the latter of course is implied to produce a lot of credit[/I]).[/QUOTE]

They do, what I could do with 1000 GTX 580s...

[QUOTE=M29;327960]57,885,161 "twos" all multiplied together.[/QUOTE]

How about invoking [url=http://en.wikipedia.org/wiki/Mr_Creosote]Mr. Creosote[/url]? [i]"57,885,161 twos, all mixed up in a bucket ... and don't skimp on the paté."[/i]

LOL, according to Wikipedia, that scene even had Quentin Tarantino feeling nauseated.

[I recall experiencing a distinctly odd mix of nausea and hilarity ... somewhat reminiscent of watching [i]Clockwork Orange[/i].]

[QUOTE=M29;327960]Maybe some variation of:

[I]57,885,161 "twos" all multiplied together.[/I]
[/QUOTE]
Reminds me of a [URL="http://en.wikiquote.org/wiki/Talk:George_Carlin"]George Carlin quote[/URL] (NSFW), or two.

But those are a bit co[B]a[/B]rse for this fine audience, so here's the third one (on the topic that there's a large one):
[QUOTE]When you sneeze, all the numbers in your head go up by one.[/QUOTE]

[QUOTE=Jayder;327968]According to what I believe is [URL="http://web.archive.org/web/20120629150932/http://www.math-cs.ucmo.edu/~gimps/gimps"]Curtis Cooper's site[/URL], more than 850. Now, how often are they turned on?[/QUOTE]

The site also mentions "About 100 computers [which] are running the program in personal homes and in different faculty and staff offices across campus...."

This suggests that they are pushing 1000 machines. That's quite a few idle cycles, even if they only run for a few hours now and then. It also explains how the occasional assignment gets stalled without anyone noticing.

[QUOTE=ixfd64;327794]Yahoo! News: [url]http://news.yahoo.com/largest-prime-number-discovered-165757465.html[/url][/QUOTE]
As seen on Y!.com:
[attach]9290[/attach]

[QUOTE=Batalov;327966]I parse Rodrigo's message as
"that is, doing LL almost exclusively" ([I]stop[/I])
"instead of TF on highly productive graphics cards" ([I]the latter of course is implied to produce a lot of credit[/I]).[/QUOTE]
You parsed it correctly. :smile:

Rodrigo

[QUOTE=Jayder;327968]According to what I believe is [URL="http://web.archive.org/web/20120629150932/http://www.math-cs.ucmo.edu/~gimps/gimps"]Curtis Cooper's site[/URL], more than 850. Now, how often are they turned on?[/QUOTE]
Thanks, that was very interesting.

The numbers for participating PCs given there are probably even higher now, as the date given is 1/13/2009. I remember when I first joined GIMPS, curtisc accounted for about 800,000 Ghz-days in the previous year, and now they're up over 1.9M. They may also have upgraded a lot of PCs since then...

Rodrigo

I wonder if Perfectly Scientific, Inc. is still going to produce those Mersenne prime posters. It would be sad if the tradition ended with Dr. Crandall's passing.

Congratulations!!