20120207, 19:15  #34 
"Carlos Pinho"
Oct 2011
Milton Keynes, UK
11147_{8} Posts 

20120207, 19:43  #35  
"Mark"
Apr 2003
Between here and the
1717_{16} Posts 
Quote:
As I understand how the project works, his computer found the prime, but PrimeGrid runs the Fermat divisibility test on the prime. Fermat divisibility testing is done by pfgw and there is no support for pfgw in BOINC. Last fiddled with by rogue on 20120207 at 19:43 

20120207, 19:49  #36  
"Carlos Pinho"
Oct 2011
Milton Keynes, UK
7×673 Posts 
I expect the same for you too.
Quote:


20120208, 06:24  #37  
"Tapio Rajala"
Feb 2010
Finland
3^{2}×5×7 Posts 
Quote:
Saying that it was found by Primegrid tells you exactly where to find the information. It is also factually correct. (I agree with you that) the combination "main contributor to the individual test" + "project name" would have been nicer. Still, if one is to drop one of those, it should be the first one as the second one gives it easily. Also, saying that "the factor was found by Rob Derrera and not by Primegrid" is simply wrong and even insulting to the people involved in the background work. 

20120210, 20:19  #38  
Nov 2006
Earth
2^{6} Posts 
Quote:
Maybe a simple link to the official announcement would suffice. It credits the project and its founders, the prime finder and host, the verifier and host, the software and its developers, and the thousands of others who participated in helping reach this discovery. However, a quick search at the Prime Pages for 131*2^1494099+1 will provide the link as well. But then again, maybe it falls short. For instance, the following are absent from the credits: the manufacturers of all the hardware(whew) Scratch all that. I like rajula's comment better: "Saying that it was "found by Primegrid" is also the easiest short way of providing a large amount of information and source for it." 

20120311, 19:44  #39 
Banned
"Luigi"
Aug 2002
Team Italia
11236_{8} Posts 
New fermat factor found by Fermatsearch!
March 11, 2012
Seventh Fermat factor found by Takahiro Nohara! 238451805 . 2^{2608}+1 is a Factor of F_{2606}!!!. The factor was discovered by Takahiro Nohara of Japan, and is the third factor of this year. He used NewPGen.exe by Paul Jobling for sieving and OpenPFGW.exe for PRP test and xGFN divisibility test. Takahiro found his factor while testing N=20052999 and k=60,000,000400,000,000 exactly on the first anniversary of the earthquake and tsunami disaster that triggered also a nuclear accident in Fukushima.. Congratulations form the team of FermatSearch! Luigi 
20120329, 15:19  #40 
"Bo Chen"
Oct 2005
Wuhan,China
2^{5}·5 Posts 
On March 28, 2012, Andriy Sen discovered a new Fermat factor.
4785972759 · 2^954 + 1 divides F943. 
20120329, 15:34  #41 
"Mark"
Apr 2003
Between here and the
23×257 Posts 

20120330, 10:29  #42 
"Bo Chen"
Oct 2005
Wuhan,China
2^{5}·5 Posts 
The factor was discovered by Andriy Sen of Ukraine, and is the fourth factor of this year.
He used GMPFermat.exe on a Windows Server 2008 R2 Standard x64, Intel Core2 CPU 6600 @ 2.40 GHz to test it. Andriy found his factor while testing N=900989 and k=4,000,000,0005,000,000,000. 
20120330, 14:40  #43  
Banned
"Luigi"
Aug 2002
Team Italia
4766_{10} Posts 
Quote:
Luigi 

20120330, 16:29  #44 
"Mark"
Apr 2003
Between here and the
5911_{10} Posts 

Thread Tools  
Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
New Generalized Fermat factors  Batalov  Factoring  149  20170220 12:06 
Best case Fermat Factors  yourskadhir  Miscellaneous Math  5  20121212 04:18 
Generalized Fermat factors  why?  siegert81  Factoring  1  20110905 23:00 
Weighted Fermat factors Top 20  Merfighters  Factoring  0  20100413 14:16 
Fermat 12 factors already found?  UberNumberGeek  Factoring  6  20090617 17:22 