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Old 2006-03-25, 12:44   #2
alpertron
 
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Aug 2002
Buenos Aires, Argentina

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Travis,

It's not a bad idea. Since MM127 is almost surely composite, MMM127 factors should not have the form 2*k*MM127+1.

My program to compute factors of googolplexplex could be adapted to perform trial division by small factors (say less than 10^12). If MMM127 has such a small factor, we are sure that MM127 is not prime.
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