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Old 2009-01-07, 20:47   #60
Mini-Geek
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"Tim Sorbera"
Aug 2006
San Antonio, TX USA

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Quote:
Originally Posted by henryzz View Post
how often are we expecting primes in this drive
i have found five primes and have tested 7200 numbers
i expected more primes
Assuming average k/base/n of 1100*2^275000-1 for 3600 candidates and 1100*2^125000-1 for 3600 candidates (to get a slightly more accurate value due to the extremely varying n-range) and sieve depth of 1800000000000 (1800G), you should expect 3.037 (2.088 from the lower range and 0.949 from the higher range) primes, so you're actually well above average.

Last fiddled with by Mini-Geek on 2009-01-07 at 20:50
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