# 
# Solution to Project Euler problem 52
# Copyright (c) Project Nayuki. All rights reserved.
# 
# https://www.nayuki.io/page/project-euler-solutions
# https://github.com/nayuki/Project-Euler-solutions
# 

import itertools


def compute():
	for i in itertools.count(1):
		digits = sorted(str(i))
		if all(sorted(str(i * j)) == digits for j in range(2, 7)):
			return str(i)


if __name__ == "__main__":
	print(compute())