1. ## Squared primes

Can a sum of five squared prime numbers be a squared prime number?

2. Hello!

Originally Posted by Jone
Can a sum of five squared prime numbers be a squared prime number?
Do you care about DIFFERENT prime numbers?

Because $2^2+2^2+2^2+2^2+3^2 = 4+4+4+4+9 = 25 = 5^2$

and 2,3,5 are prime numbers

Regards
Rapha

3. Of course they can be different (or must, as otherwise there's no such possibility).
Is there a general formula that will help me evaluate all such prime numbers?

4. Can

P0^2 = p1^2 + p2^2 + p3^2 + p4^2 + p5^2

Since all primes (except 2) are of the form: 2k+1

the lhs: 4k^2 + 4k + 1

After some additions and simplifications, the lhs & rhs
will never have odd/even parity.