백준 1929번

import math

def isPrime(num):

if num<2:

return False

elif num==2:

return True

else:

i = int(math.sqrt(num))

for j in range(2,i+1):

if num%j ==0:

return False

return True

a,b = map(int, input().split())

for i in range(a,b+1):

if isPrime(i):

print(i)