谈谈不超过x的素数个数π(x)的求法及其应用

Solution and Application of π（x）Less Than X's Number of Prime Number

本文研究不超过x的素数个数π（x）的求法，得到了三种不同的计算方法，并将它们的运用进行比较。

In this paper， the Solution， not more than X' s numbr of prime number has been Studied and three different Calculation Solutions have been Obtained and a Comparision has been made among them．