Home>Article>Backend Development> How to find prime numbers using python
How to use python to find prime numbers within 100?
Prime numbers are also called prime numbers, and there are infinite numbers. A prime number is defined as a number that has no other factors except 1 and itself among natural numbers greater than 1, such as: 2, 3, 5, 7, 11, 13, 17, 19.
Method 1, use for loop to implement
num=[]; i=2 for i in range(2,100): j=2 for j in range(2,i): if(i%j==0): break else: num.append(i) print(num)
Method 2, use function to implement
import math def func_get_prime(n): return filter(lambda x: not [x%i for i in range(2, int(math.sqrt(x))+1) if x%i ==0], range(2,n+1)) print func_get_prime(100)
The output result is:
[2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97]
The above is the detailed content of How to find prime numbers using python. For more information, please follow other related articles on the PHP Chinese website!