The famous Goldbach's conjecture: "Any even number greater than 4 can be expressed as the sum of two prime numbers". Such as: 6=3+3, 12=5+7, etc. So, how many ways can the natural number 100 be written as the sum of two different prime numbers? Please write them out separately. (100=3+97 and 100=97+3 count as the same form)
著名的哥德巴赫猜想："任意一个大于4的偶数都可以表示成两个质数的和"．如：6=3+3，12=5+7等．那么，自然数100可以写成多少种两个不同质数和的形式？请分别写出来．(100=3+97和100=97+3算作同一种形式)
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