Changes

The probability that number of primes smaller than a random integer given number <math>N is prime </math> is roughly 1/<math>\frac{N}{\ln(N)}</math>, where <math>\ln(N) </math> is the natural logarithm (base ''e'') of <math>N</math>.<ref>http://home.att.net/~numericana/answer/primes.htm</ref> This is a formulation of a more general statement known as the [[prime number theorem]].