Question

what exactly is a prime number? a number that has two factors ...one and itself
but what does that mean?

Answer 1

It means that a prime number can not be divided by a number evenly (no remainder) except the number itself and 1. However, 1 itself is not considered a prime number.

Answer 2

Yeah, exactly what radar said.

For example, let's say you have 3. Can you divide 3 by any other number?

I would say yes you can, you can divide it by 2 but that would get me a number with decimals and I don't want decimals. So you can't divide 3 by any number except itself or one so that makes it totally prime.

But 4, for example, can be divided by 2 and give you a whole number. So 4 is not a prime number.

Answer 3

it s a no. dat just has 2 factors ie., 1 and d no itself