mersenneforum.org

mersenneforum.org (https://www.mersenneforum.org/index.php)
-   News (https://www.mersenneforum.org/forumdisplay.php?f=151)
-   -   (M48) NEW MERSENNE PRIME! LARGEST PRIME NUMBER DISCOVERED! (https://www.mersenneforum.org/showthread.php?t=17704)

ewmayer 2013-01-26 01:54

(cc of e-mail I just sent to George and the rest of the folks he informed privately)

Hi, George:

(Preliminary) congratulations ... I have been busy the past several months working on an AVX-vectorized port of my pthreaded Mlucas code, that is not ready yet, but the existing parallel SSE2 version may be sufficiently fast for a verification. Let me do some trial timings on my 4-core Sandy Bridge box when I get home this evening (PST time zone) and I'll let you know what the timings look like.

(FYI, that box is currently testing F27 using FFT length 8192K, getting 0.06 sec/iter running on all 4 cores. George, that should allow you to compute a rough timing estimate for a verify run. Machine is only LAN-networked, so I am unable to access it remotely from my current location.)

NBtarheel_33 2013-01-26 02:18

[QUOTE=kracker;325870]Holy crap yeah!!

EDIT: could you tell us the general range of it? ex 50M or 45M... or is that not "allowed"?[/QUOTE]

Based on the results that have been coming in recently from curtisc, probably in the 50-60M range. The 40Ms are getting pretty few and far between.

flashjh 2013-01-26 02:19

Well, either way, this is what we're all here for. Excited to see the dry streak end.

ATH 2013-01-26 02:25

Very nice, if this turns out to be prime we made it just under 2,000,000 minutes since last one. New record gap, lets hope it's never broken again :)
[URL="http://www.timeanddate.com/countdown/to?iso=20090412T0427&p0=2571&msg=Time+since+last+GIMPS+prime"]http://www.timeanddate.com/countdown/to?iso=20090412T0427&p0=2571&msg=Time+since+last+GIMPS+prime[/URL]


Any chance you could message me the exponent? I would just like to start the "[URL="http://mersenneforum.org/showthread.php?t=5862"]penultimate LL step[/URL]" run. I don't have any "big iron" just a standard sandy bridge laptop.

firejuggler 2013-01-26 02:26

in the prospect of M48 being confirmed, does that mean that we are excepting a 7 -10year drought?

Prime95 2013-01-26 02:33

[QUOTE=ATH;325889]
Any chance you could message me the exponent? I would just like to start the "[URL="http://mersenneforum.org/showthread.php?t=5862"]penultimate LL step[/URL]" run.
[/QUOTE]

How about I send you the last save file (if I get it)? This will save you an awful lot of needless work.

Prime95 2013-01-26 02:37

[QUOTE=firejuggler;325890]in the prospect of M48 being confirmed, does that mean that we are excepting a 7 -10year drought?[/QUOTE]

If it is prime, it does not change davideddy's estimate of the time to the next prime one bit. (Well, technically it does change it a very, very, very tiny bit because one more exponent has changed from status unknown to status known).

A 7-10 year drought is not out of the question. I sure hope not.

kracker 2013-01-26 02:48

[QUOTE=NBtarheel_33;325885]Based on the results that have been coming in recently from curtisc, probably in the 50-60M range. The 40Ms are getting pretty few and far between.[/QUOTE]

Haha, I see.

anyways.... GL to all who are doing to do DC! :smile: Wish I could help, but I only have a measly i3-3220 max :razz:

ATH 2013-01-26 02:52

[QUOTE=Prime95;325893]How about I send you the last save file (if I get it)? This will save you an awful lot of needless work.[/QUOTE]

That would be great. I didn't even consider that as an option :) But if you don't get the savefile I don't mind doing the run like I did before several times.

Dubslow 2013-01-26 03:44

I have a 2600K (with 8MB L3) and a 560 just begging to run some LL tests...

chappy 2013-01-26 03:56

[QUOTE=flashjh;325886]Well, either way, this is what we're all here for. Excited to see the dry streak end.[/QUOTE]

Exactly! This just made my day.


All times are UTC. The time now is 09:05.

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.