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Old 2006-05-28, 11:52   #4
AntonVrba
 
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Jun 2005

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Quote:
Originally Posted by K Ramsey
Are there really programs out there that can give the primeness of 2^4423 -1 on my Windows XP in less than 7 seconds without being based upon the predetermined fact of it?
YES
PFGW Version 1.2.0 for Windows [FFT v23.8]

Primality testing 2^4423-1 [N+1, Brillhart-Lehmer-Selfridge]

Running N+1 test using discriminant 3, base 1+sqrt(3)
2^4423-1 is prime! (0.1584s+0.0022s)

And 7 Seconds

PFGW Version 1.2.0 for Windows [FFT v23.8]

Primality testing 2^23209-1 [N+1, Brillhart-Lehmer-Selfridge]
Running N+1 test using discriminant 3, base 1+sqrt(3)
2^23209-1 is prime! (7.0036s+0.0025s)

Done.

Last fiddled with by AntonVrba on 2006-05-28 at 12:00
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