def Factor(n):
    Ans = []
    d = 2
    while d * d <= n:
        if n % d == 0:
            Ans.append(str(d))
            n //= d
        else:
            d += 1
    if n > 1:
        Ans.append(str(n))
    return Ans

n = int(input())
print('*'.join(Factor(n)))