with open('INPUT.TXT', 'r') as f:
    n = int(f.read().strip())

factors = []

d = 2
while d * d <= n:
    while n % d == 0:
        factors.append(d)
        n //= d
    d += 1

if n > 1:
    factors.append(n)

with open('OUTPUT.TXT', 'w') as f:
    f.write('*'.join(map(str, factors)))