2, 3, 5, 7, ... The set of prime numbers is the alphabet of mathematics that allows us to communicate across the universe.

**Details and assumptions**

If your answer is 1:23 am, type it in as 123.

John and Amy have the mathematical conversation above. How old is Amy?

The sum of three primes is 100. One of them exceeds the other by 36. Find the largest prime.

\[345!+2 , 345!+3 , 345!+4 , \ldots , 345!+345\]

Find the number of primes among the numbers above.

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