Step 1

We have asked if a number that has exactly 2 factors (1 and itself) then what kind of number is that.

Step 2

If a number has only two factors ,1 and itself then that number is called a prime . (1)

A prime number is divisible only by that number and 1 only.

So the first option is incorrect since when we factor a number by 1 and that number only then this not called a factorization . When we factor a number by prime numbers then this is called prime factorization or simply factorization.

Option 2 is correct by (1)

Since it is a prime number then it can't be a composite number .So option 3 is incorrect.

It is also not called multiplication since multiplication occurred when we multiply two different numbers .So option 4 is also incorrect.

We have asked if a number that has exactly 2 factors (1 and itself) then what kind of number is that.

Step 2

If a number has only two factors ,1 and itself then that number is called a prime . (1)

A prime number is divisible only by that number and 1 only.

So the first option is incorrect since when we factor a number by 1 and that number only then this not called a factorization . When we factor a number by prime numbers then this is called prime factorization or simply factorization.

Option 2 is correct by (1)

Since it is a prime number then it can't be a composite number .So option 3 is incorrect.

It is also not called multiplication since multiplication occurred when we multiply two different numbers .So option 4 is also incorrect.