# Why is this infinite product for pi not in any textbook? Is it not interesting for some reason?

PI = sqrt(2) * sqrt(3) * 2/sqrt(2^2-1) * 3/sqrt(3^2-1) * ... * p/sqrt(p^2-1) * ...

for all prime numbers p

### 1 Answer

Relevance

- ignoramusLv 71 month ago
Why should it be ? What use does it have ? I have no doubt that it is well-know to math nerds who have a special interest in prime numbers, but the rest of us can have a happy, fulfilled life without ever knowing of its existence.

Still have questions? Get your answers by asking now.

Also, there are an infinite number of primes. So, it is impossible to list them all.