Hmmm... I would guess so.

New features in Version 24.12 of prime95.exe
--------------------------------------------
2) As a side "benefit" even larger FFT sizes are now
supported.  This allows testing of exponents up to 596
million.  Not recommended.


Was curious how long it would take to L-L a exponent
so large, so ran a few tests on a 3Ghz P4D.
At approx. 2.1 sec. per iteration, it would take ~41.6
years to test the exponent M595,899,959 using a
32,768K FFT length.
That is assuming the trial-factoring to 2^80 (~1.25
years) and the P-1 (stage 1 only where B1= 8,010,000
B2=8,010,00 (chosen by Prime) with FFT of 32M and
3.04% chance) of ~6 days didn't find any factors.


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