from __future__ import generators

def firstn(g, n):
	for i in range(n):
		yield g.next()

def intsfrom(i):
	while 1:
		yield i
		i = i + 1

def exclude_multiples(n, ints):
	for i in ints:
		if (i % n): yield i

def sieve(ints):
	while 1:
		prime = ints.next()
		yield prime
		ints = exclude_multiples(prime, ints)
	
if __name__ == '__main__':
	for i in firstn(sieve(intsfrom(2)), 400):
		print i