def find_factorial(factorial):
    for i in range(1, factorial):
        num = i
        for x in range(1, i):
            num *= x
        if num == factorial:
            return str(factorial) + ' = ' + str(i) + "!"
        elif num > factorial:
            return str(factorial) + ' NONE'
 
print(find_factorial(120))
print(find_factorial(150))
print(find_factorial(3628800))
print(find_factorial(479001600))
print(find_factorial(6))
print(find_factorial(18))

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