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.
大于3的素数都是2n+1is easier.
回复:关于素数的题目求助
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谢谢Jinjing, 但
-fantawu1-
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03/31/2010 postreply
15:11:10
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回复:谢谢Jinjing, 但
-jinjing-
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03/31/2010 postreply
16:58:03