class Prime {
    public static void main(String[] args) {
		for (int i=1;i<100;i++ )
		{	
			boolean isPrime;
			isPrime = true;
			for (int j=2;j<i ;j++)
				if (i%j == 0)		
					isPrime = false;
			if(isPrime == true)
				System.out.println(i);	        
		}		   
    }
}