from primes import prime_factors


if __name__ == '__main__':
    factors = [None, None, None, None]
    for i in range(3, 1000000):
        factors.append(prime_factors(i))
        factors = factors[1:]
        if None in factors: continue
        if all(len(set(x)) > 3 for x in factors):
            print(i - 3, i, [set(x) for x in factors])
            break