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-   -   F10,21=10^(2^21)+1 is composite (https://www.mersenneforum.org/showthread.php?t=3256)

Shaopu Lin 2004-10-30 17:38

F10,21=10^(2^21)+1 is composite
 
Today I proved that F10,21=10^(2^21)+1 is composite by Yves Gallot's Proth.exe on 2.80GHz P4 PC with Windows XP,it has 2097153 digits and it is the smallest Generalized Fermat number characteristic unknown.
I hope that someone can check it again to prove that this thing is true. :cat:

geoff 2004-10-31 11:34

How long did it take?

Shaopu Lin 2004-10-31 13:48

It took about a week.
 
This process took 8 days,including the time which this process paused.


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