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Old 2006-04-01, 21:48   #89
paulunderwood
 
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Sep 2002
Database er0rr

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The GMP program for 2^107-1 recorded a small negative time... but in fact took about 45 32-bit Athlon GHz-hours:

Code:
Exponent     Total number of zeroes
   2                   1
   3                   1
   5                   2
   7                   5
   13                  8
   17                  13
   19                  15
   31                  28
   61                  96
   89                  140
   107                 185
I am not going to attempt Lucas' 2^127-1

Last fiddled with by paulunderwood on 2006-04-01 at 21:50
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Old 2006-04-01, 22:00   #90
R. Gerbicz
 
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"Robert Gerbicz"
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Quote:
Originally Posted by paulunderwood
The GMP program for 2^107-1 recorded a small negative time... but in fact took about 45 32-bit Athlon GHz-hours:
Oh, yes there is a problem in timing routine above about 1800 sec ( because I've used double variable ). But the program is good.
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Old 2006-04-01, 22:06   #91
jinydu
 
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Quote:
Originally Posted by casevh
89 * ln(2) * [ln(ln(sqrt(2^89-1))) - ln(ln(3))]
I don't know what's going on. I evaluated that on Mathematica and I got 206, not 326...
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