Thread: Double-Check
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Old 2016-08-29, 20:46   #4
I moo ablest echo power!
wombatman's Avatar
May 2013

33718 Posts

Thanks to both of you. For full clarification, here's what I get with PFGW's "-tp" switch:

$ pfgw64.exe -f0 -a1 -tp -q"63998*297^21888-1"
PFGW Version [GWNUM 28.6]

No factoring at all, not even trivial division
Primality testing 63998*297^21888-1 [N+1, Brillhart-Lehmer-Selfridge]
Running N+1 test using discriminant 2, base 2+sqrt(2)
63998*297^21888-1 is composite (240.1252s+0.0018s)
I went ahead and used LLR to confirm that it's prime.

Last fiddled with by wombatman on 2016-08-29 at 20:47
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