pripal.py2

import sys,math

def pri(i):
	for j in range(2,int(math.sqrt(i))):
		if i%j==0:
			return False
	else:
		return True

def pal(i):
	for j in range(0,int(len(str(i))/2)):
		if str(i)[j-1] != str(i)[-j]:
			return False
	else:
		return True

if __name__ == '__main__':
	for i in range (1000,1,-1):
		if pri(i):
			if pal(i):
				print i
				break