等基数阵与哥裕巴赫幻想我们首先考查一个数成为江数的条件．如果一个奇数２。＋ｌ是合数．也就是说．它必可分解为两个异于１的奇因子Ｚｍ＋ｌ和Ｚｋ十１之积，即那么ｎ—Ｚｍｋ十ｍ干力．于是我们有：由回１设ｎ６Ｎ，则Ｚｎ＋１为素数的充要条件是对任何ｋ，ｍＥＮ，ｎ... Waiting for the base array and Cogebach’s fantasy, we first examine the conditions under which a number becomes a number. If an odd number of 2. +l is a composite number. That is to say. It must be decomposed into the product of two odd factors, Zm+l and Zk, which are different from 1, that is, n-Zmk ten m. So we have: Let n6N be set back by 1, then the necessary and sufficient condition for Zn+1 to be a prime number is for any k, mEN, n...