mirror of
https://github.com/TheAlgorithms/Python.git
synced 2024-11-24 21:41:08 +00:00
31 lines
582 B
Python
31 lines
582 B
Python
'''
|
|
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 Nth prime number?
|
|
'''
|
|
from __future__ import print_function
|
|
from math import sqrt
|
|
def isprime(n):
|
|
if (n==2):
|
|
return True
|
|
elif (n%2==0):
|
|
return False
|
|
else:
|
|
sq = int(sqrt(n))+1
|
|
for i in range(3,sq,2):
|
|
if(n%i==0):
|
|
return False
|
|
return True
|
|
n = int(input())
|
|
i=0
|
|
j=1
|
|
while(i!=n and j<3):
|
|
j+=1
|
|
if (isprime(j)):
|
|
i+=1
|
|
while(i!=n):
|
|
j+=2
|
|
if(isprime(j)):
|
|
i+=1
|
|
print(j)
|