20120913, 18:32  #1 
Banned
"Luigi"
Aug 2002
Team Italia
2×29×83 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
Jun 2011
Thailand
3·47·67 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
Jun 2011
Thailand
24E7_{16} Posts 
Went to the page:
Quote:


20120914, 08:37  #4 
Banned
"Luigi"
Aug 2002
Team Italia
2·29·83 Posts 

20120914, 23:33  #5 
Banned
"Luigi"
Aug 2002
Team Italia
2·29·83 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
2^{2}·1,873 Posts 

20120915, 06:17  #7  
"Åke Tilander"
Apr 2011
Sandviken, Sweden
566_{10} 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
191 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
2^{2}×17×73 Posts 

20120915, 07:13  #10 
Romulan Interpreter
Jun 2011
Thailand
3·47·67 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
2×29×83 Posts 

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