input: from typing import List
  
  
  def primeCheck(num: int) -> bool:
      """ Check if the given number is a prime number.
      >>> primeCheck(2)
      True
      >>> primeCheck(4)
      False
      >>> primeCheck(11)
      True
      """
      if num > 1:
          for i in range(2, num):
              if (num % i) == 0:
                  return False
          return True
      else:
          return False
output:     if num <= 1:
          return False
      if num == 2:
          return True
      if num % 2 == 0:
          return False
      for i in range(3, int(num**0.5) + 1, 2):
          if num % i == 0:
              return False
      return True