package cn.edu.bjut.chapter2;

public class PrimeNumber {
	public static void main(String[] args) {
		int n = 0, m, j, i;
		System.out.print("2");
		label: for (i = 3; i <= 100; i += 2) {
			m = (int) Math.sqrt((double) i);
			for (j = 2; j <= m; j++) {
				if ((i % j) == 0) {
					break;
				}
				if (i == 51) {
					break label;
				}
			}
			if (j >= m + 1) {
				if (n % 6 == 0) {
					System.out.println("\n");
				}
				System.out.print(i + "  ");
				n++;
			}
		}
	}
}