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: dp = [0 for i in range(1000000)]
  N = int(input())
  for i in range(2, N):
      if i**2 > N:
          break
      if dp[i] != 0:
          continue
      for j in range(i, N, i):
          dp[j] = 1
  while dp[N] != 0:
      N += 1
  print(N)
  
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"}]