Question

Why prime number cannot be a square number?

Answer 1

becuase prime is only dividible by itselgf and one

Answer 2

A prime number has 2 factors and squares have an odd number of factors.

Explanation:

All square numbers have an odd number of factors.

1 has the factor 1
4 has the factors 1,2,4
9 has the factors 1,3,9
16 has the factors 1,2,4,8,16

x2 has the factors 1,x,x2

A prime number by definition has exactly 2factors - 1 and itself.

Therefore no prime number is a square and no square number is prime.