20120913, 18:32  #1 
Banned
"Luigi"
Aug 2002
Team Italia
2×2,417 Posts 
History
Put on this thread whatever you know about the history of the search of Double Mersennes.
I will check from time to time, and insert the most interesting items on the website. Lugi 
20120914, 04:46  #2 
Romulan Interpreter
"name field"
Jun 2011
Thailand
2^{4}×613 Posts 
well, for me it happen more often, when I have to sign official papers with full name... I have a very long name (my parent's fantasies)
but... Lugi? 
20120914, 06:48  #3  
Romulan Interpreter
"name field"
Jun 2011
Thailand
23120_{8} Posts 
Went to the page:
Quote:


20120914, 08:37  #4 
Banned
"Luigi"
Aug 2002
Team Italia
2×2,417 Posts 

20120914, 23:33  #5 
Banned
"Luigi"
Aug 2002
Team Italia
2·2,417 Posts 
Private communication from Landon Curt Noll
I just read this sentence: "In private correspondence with Chris K. Caldwell, I announced that C_{5} = 2^{(2[sup]127}1)[/sup]1 has no prime factor < 5 * 10^{51}."
The links are: http://www.isthe.com/chongo/bio.html#publications http://www.isthe.com/chongo/tech/math/prime/index.html Here is Chris Caldwell publication about his claim: http://primes.utm.edu/mersenne/index.html#c Is there any official paper about it? I tried to email Mr. Noll asking for some more infos... Luigi Last fiddled with by ET_ on 20120914 at 23:50 
20120915, 03:31  #6 
P90 years forever!
Aug 2002
Yeehaw, FL
7,681 Posts 

20120915, 06:17  #7  
"Åke Tilander"
Apr 2011
Sandviken, Sweden
2×283 Posts 
Quote:
If there is already please post a link. The only such site I know about is Will Edgingtons: http://www.garlic.com/~wedgingt/MMPstats.txt Last fiddled with by aketilander on 20120915 at 06:19 

20120915, 06:48  #8  
Oct 2010
277_{8} Posts 
Quote:
http://www.doublemersennes.org Last fiddled with by ET_ on 20120924 at 11:44 Reason: Updated link 

20120915, 07:05  #9 
Jun 2003
1010001000000_{2} Posts 

20120915, 07:13  #10 
Romulan Interpreter
"name field"
Jun 2011
Thailand
2^{4}·613 Posts 
No. The definition should say nothing about primality. Mersenne numbers Mp are defined for all p, not only for primes. Later on, there is usually a discussion about when a mersenne number can be prime and when it can not, but primality of p should not be required in the definition. A double mersenne number is just a mersenne number whose exponent is also a mersenne number.
Last fiddled with by LaurV on 20120915 at 07:13 
20120915, 11:09  #11 
Banned
"Luigi"
Aug 2002
Team Italia
2·2,417 Posts 

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