Question

Is a multiple of the prime number 3 also a prime number?

Answer 1

No

Explanation:

A multiple of the prime number 3 is not also a prime number because since it is a multiple, it is something like 3`xx` `n` for any number `n`. For example, 6 is a multiple of 3 and it is composite, not prime. Also, 9 is 3`xx`3 and it is not prime.

Answer 2

Only `1xx3 = 3` itself.

Explanation:

A prime number is a number whose only whole factors are `1` and itself.

The only positive integral multiple of `3` which is a prime number is `1xx3 = 3` itself.

Any larger multiple is composite since it will be a multiple of `3` and another whole number larger than `1`.