1.

There are two prime numbers p so that 5p can be expressed in the form of [n25] for some positive integer n, where [.] denotes the greatest integer function. The sum of these two prime numbers is

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There are two prime numbers p so that 5p can be expressed in the form of [n25] for some positive integer n, where [.] denotes the greatest integer function. The sum of these two prime numbers is



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