import java.util.*;

public class Main {
    public static void main(String[] args) throws Exception {

        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        for(int i = 0 ; i < n ; i++){
            Set<Integer> list = constructPrimeNumbers(sc.nextInt());
            System.out.println(list.size());
        }
    }
    
    private static Set<Integer> constructPrimeNumbers(int maxNumber) {

		Set<Integer> primeNumbers = new HashSet<Integer>();

		boolean[] targetNumbers = new boolean[maxNumber + 1];
		Arrays.fill(targetNumbers, true);
		targetNumbers[0] = false;
		targetNumbers[1] = false;

		int sqrt = (int) Math.sqrt(maxNumber);

		for (int i = 2; i <= sqrt; i++) {
		
			int firstNum = i;
			
			if (targetNumbers[i]) {
				for (int j = i * firstNum; j < targetNumbers.length; j = j + firstNum) {
					targetNumbers[j] = false;
				}
			}
		}

		for (int i = 2; i < targetNumbers.length; i++) {
			if (targetNumbers[i]) {
				primeNumbers.add(i);
			}
		}

		return primeNumbers;

	}

}