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  1. def InvFactorial(num):
  2.     out = CalcInvFactorial(num)
  3.     return('Inverse factorial of %s is %s' % (num, out) )
  4.  
  5.  
  6. def CalcInvFactorial(n):
  7.     i = 0
  8.     invFac = 0
  9.     while (invFac != 1):
  10.         i += 1
  11.         invFac = n / i
  12.         if (n % i != 0):
  13.             return 'NONE'
  14.         else:
  15.             n = invFac
  16.     return i
  17.  
  18.  
  19. print(InvFactorial(3628800))
  20. print(InvFactorial(479001600))
  21. print(InvFactorial(6))
  22. print(InvFactorial(18))
Success #stdin #stdout 0.01s 9992KB
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Inverse factorial of 3628800 is 10
Inverse factorial of 479001600 is 12
Inverse factorial of 6 is 3
Inverse factorial of 18 is NONE
https://ideone.com/20DTaE
language:
Python 3 (python  3.9.5)
created:
7 years ago
visibility:
public

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