回複：關於素數的題目求助

來源: 於 2010-03-31 14:23:16 [舊帖] [給我悄悄話] 本文已被閱讀：次

If p,q are different prime numbers,no one is 2,the difference is even number,it is not 0,so greater than 1.If p=2,q>3,q-p can't be 1.
大於3的素數都是2n+1is easier.