有判断一个数是否是奇素数的函数、判断一个数是否能分解成奇素数的乘积的函数，通过上述判断来分析一个数是否存在原根。-to judge whether a number is odd prime function, determine whether the number can be decomposed into an odd prime function of the product by the judge to analyze the existence of a number of primitive roots.