projecteuler---->problem=7----10001st prime

title:

By listing the first six prime numbers: 2, 3, 5, 7, 11, and 13, we can see that the 6th prime is 13.

What is the 10 001st prime number?

翻译：

通过列出前6个质数，我们可知第6个质数是13。

那么第10001个质数是多少呢？

解答：

import math
# 试除法
def isOk(a):
	for i in range(2,int(math.sqrt(a))+1):
		if a%i == 0:
			return False
	return True
n=0
i=2
while n<10001:
	if isOk(i) :
		n+=1
	i += 1
print i-1

projecteuler---->problem=7----10001st prime