text: def is_prime(number):
      if(number < 2):
          return False
          
      #check if number is divisible by 2 to number - 1
      divisor=2
      while divisor*divisor <= number:
          if number % divisor == 0:
              return False
          divisor+=1
              
      return True
      
  print(is_prime(15))
  print(is_prime(10))
  