output_description: Print the minimum prime number greater than or equal to X.
  
  * * *
input_description: Input is given from Standard Input in the following format:
  
      
      
      X
attempt: x = int(input())
  Primes = [2]
  cand = 2
  max_prime = 2
  while max_prime < x:
      cand = cand + 1
      for prime in Primes:
          if cand % prime == 0:
              break
      else:
          max_prime = cand
          Primes.append(cand)
  print(max_prime)
  
problem_description: Statement
  
  Find the minimum prime number greater than or equal to X.
samples: [{"input": "20", "output": "23\n    \n\nThe minimum prime number greater than or equal to 20 is 23.\n\n* * *"}, {"input": "2", "output": "2\n    \n\nX itself can be a prime number.\n\n* * *"}, {"input": "99992", "output": "100003"}]