Thread: Odds
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Old 2016-03-07, 23:36   #1
Fred
 
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"Ron"
Jan 2016
Fitchburg, MA

97 Posts
Default Odds

Could someone give a brief elementary level explanation of how Prime95 calculates the odds that one of the numbers someone is testing is prime? For example, under Test -> Status where it says the odds are 1 out of xxx,xxx.

I had thought the number of Mersenne primes was thought (proven) to be infinite. Is there a way of calculating (or estimating) how many there are in a given exponent range? Or perhaps are the odds give just based on past experience (number of exponents tested by gimps in relation to number of primes found by gimps)?

Last fiddled with by Fred on 2016-03-07 at 23:42
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