采用筛选法求指定范围内的质数，并验证哥德巴赫猜想

输入一个数M，判断它是否为质数。所用的方法是从一到根号M，一次除，判断余数是否为零。-Input a number M, judge whether it for prime Numbers. The way from one to the square M, a except, judge whether remnant to zero.

数学程序——质数自动排定及非质数计算出其因子-Math program- scheduled and non-prime auto-calculate its prime factors