用Witness2实现Miller

代码说明：

用Witness2实现Miller-Rabin算法，主程序循环5―20次，看在100,000―200,000之间有多少个数被判为素数-With the Miller-Rabin algorithm to achieve Witness2, the main program loop 5-20 times, to see how many in number between 100,000-200,000 convicted of prime