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-   -   Search for prime Gaussian-Mersenne norms (and G-M-cofactors) (https://www.mersenneforum.org/showthread.php?t=19235)

Cruelty 2014-03-31 08:31

WOW!!! Congratulations!
:groupwave:

Thomas11 2014-03-31 15:20

Congratulations!

[QUOTE=Batalov;370026]Fancy that, an 11-PRP... where did this come from? ;-)
[/QUOTE]

Seems to be a great day for finding million digits [B]11[/B]-PRPs and [URL="http://primes.utm.edu/primes/page.php?id=117523"]k=[B]11[/B] Riesel primes[/URL]! :wink:

Cruelty 2014-03-31 21:54

Search for prime Gaussian-Mersenne norms (and G-M-cofactors)
 
Original thread developed over time [URL="http://www.mersenneforum.org/showthread.php?t=8765"]here[/URL].
This topic is only about GMs (primes) and GQs (PRPs).

Latest reservation status:
[code]till 600k - completed by Jean Penné (GQ-only effort)
600k - 700k - completed by Cruelty (GQ-only effort)
700k - GM36 - completed by Thomas11 (GQ-only effort, 1 GQ found)
GM36 - 1.95M - completed by Cruelty (2 GMs + 5 GQs found)
1.95M - 2M - reserved by Cruelty (currently @ 1.98M)
2M - 3.5M - completed by Batalov (1 GQ found)
3.5M - 3.85M - reserved by Citrix (prefactored to 55 bits)
3.85M - 4.3M - completed by Batalov
4.3M - 4.7M - reserved by Batalov (1GQ found so far)

3.85M - 5M - pre-factored till 55 bits by Citrix
GM37-40M - pre-factored till 48 bits by Cruelty[/code]

Batalov 2014-03-31 23:05

(in parentheses:

This sort of bothered me from the very beginning - because of the 'misclassification' it was hard to even find this thread, back then.

These are Proth, not Riesel primes.
However, there is no [I]Proth Prime Search[/I] subforum.
They also don't fit the aging prothsearch.net site [even if as 'other projects'].

So I guess, this is just as good a place as any.)

Citrix 2014-04-01 17:37

[url]http://www.mersenneforum.org/forumdisplay.php?f=80[/url] might be a good place for this thread?

Cruelty 2014-04-02 10:18

What about new primes? To which project will you assign them should you find any? I have reported GM38 as RPS prime, and since for the past couple of years nobody cared much about GMs I would stick with RPS :tu:

Kosmaj 2014-04-02 11:49

We are proud that one of our members started the GM search and will be happy to keep hosting the thread on our forum! :geek:

Batalov 2014-04-02 16:54

Well, to be fair, Mike Oakes started it actually, and Iskra continued; then Borys (Cruelty) carried on...

Batalov 2014-04-04 01:17

I am practically done with the 4.3-4.7M range and will continue to 5.1M.

I am in the process of adapting mfaktc into a "gmqfaktc" (searching for factors of 2[SUP]2p[/SUP]+1 on a GPU, and then parsing them into GM and GQ factors on the host CPU).

Then we could sieve up to 64-65 bits depth. It is not very fast but once we pass ~5M, we [I]will [/I]need it.

Batalov 2014-04-04 04:09

1 Attachment(s)
I've changed two kernels - this should be enough to run trial factoring [U]up to 64-bit[/U] and roughly hacked some code and a few self-tests. All previously found factors validate (with 32-bit LLR, too). Prototyped on linux.

The patch is attached. Needs TLC for Windows.

Cruelty 2014-04-04 09:27

Latest reservation status:
 
[code]till 600k - completed by Jean Penné (GQ-only effort)
600k - 700k - completed by Cruelty (GQ-only effort)
700k - GM36 - completed by Thomas11 (GQ-only effort, 1 GQ found)
GM36 - 1.95M - completed by Cruelty (2 GMs + 5 GQs found)
1.95M - 2M - reserved by Cruelty (currently @ 1.98M)
2M - 3.5M - completed by Batalov (1 GQ found)
3.5M - 3.85M - reserved by Citrix (prefactored to 55 bits)
3.85M - 4.3M - completed by Batalov
4.3M - 4.7M - completed by Batalov (1GQ found)
4.7M - 5.1M - reserved by Batalov

3.85M - 5M - pre-factored till 55 bits by Citrix
GM37-40M - pre-factored till 48 bits by Cruelty[/code]BTW: Should we update current status in the first post in this thread or publish status updates as new posts? What do you think? :smile:


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