def min_of_three(a,b,c):
       
      if (a <= b) and (a <= c): 
        smallest = a 
      elif (b <= a) and (b <= c): 
        smallest = b 
      else: 
        smallest = c 
      return smallest 
def is_not_prime(n):
    import math
    
    result = False
    for i in range(2,int(math.sqrt(n)) + 1):
        if n % i == 0:
            result = True
    return result