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Old 2005-01-15, 21:35   #4
Mystwalker's Avatar
Jul 2004
Potsdam, Germany

3×277 Posts

Lately, I've found Primo, which seems to be a relatively fast primalty proving program for numbers of no special form.
Unfortunately, 4000 digits will most likely still take several weeks or even months.

It seems like Jens Franke et. al have a distributed primalty proving program, though.
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