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Old 2005-11-03, 12:36   #1
pacionet
 
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Default 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 ?
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Old 2005-11-03, 17:53   #2
garo
 
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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.
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Old 2005-11-04, 11:53   #3
pacionet
 
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Post last question

Quote:
Originally Posted by garo
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.
LMH forum is also to reserve exponent for LL testing of such exponents ?
I have not to email to Woltman or fill the manual test form on primenet ?

Last fiddled with by pacionet on 2005-11-04 at 11:55
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Old 2005-11-04, 17:34   #4
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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.
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Old 2005-11-04, 20:10   #5
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Quote:
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.
of course , mine was just curiosity, but I think that some days I 'll try with such an exponent .
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