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.
回複:關於素數的題目求助
所有跟帖:
• 謝謝Jinjing, 但 -fantawu1- ♀ (223 bytes) () 03/31/2010 postreply 15:11:10
• 回複:謝謝Jinjing, 但 -jinjing- ♀ (106 bytes) () 03/31/2010 postreply 16:58:03