20051103, 12:36  #1 
Oct 2005
Italy
3·113 Posts 
very large exponents
I saw this thread :
http://mersenneforum.org/showthread.php?t=1203 Can I also get such a large exponent ? How can I do ? 
20051103, 17:53  #2 
Aug 2002
Termonfeckin, IE
2^{4}×173 Posts 
Yes you can get a large exponent like this. Download the nofactor.zip file from http://mersenne.org/gimps/ Also download the decomp.exe uncompress the former and then run decomp t begin_range end_range This should give you a set of numbers to test. Note even with the fastest computer a 77M exponent will take a year or so.
Also make sure you post your choice in the LMH forum. 
20051104, 11:53  #3  
Oct 2005
Italy
523_{8} Posts 
last question
Quote:
I have not to email to Woltman or fill the manual test form on primenet ? Last fiddled with by pacionet on 20051104 at 11:55 

20051104, 17:34  #4 
Aug 2002
Termonfeckin, IE
2^{4}×173 Posts 
No you need to email George or fill out the manual form only if you wish to take an exponent that is in the ranges currently being assigned by Primenet. Note that the manual forms  if they were working  would assign you a number automatically.
While you do not need to, you can always go and ask George for a number via email. He will be morethan happy to respond. I would also suggest that you get some idea of how long a number would take on your computer, what are the chances of it being prime and whether you are willing to wait that long. 
20051104, 20:10  #5  
Oct 2005
Italy
3·113 Posts 
Quote:


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