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Q: Why isn't 8 nor 9 a prime number?

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Neither 246 nor 8 are prime numbers; rather, they are both composite numbers.

8 is a composite number. A prime number has only 2 factors which are 1 and itself. Composite numbers are everything else except 1 and 0. 1 and 0 are neither prime, nor composite.

Factors of 16 are 1, 2, 4, 8, and 16. The only prime factor is 2. Note that 1 is neither prime nor composite number.

there isnt one because 27 is a prime number. and come one, really? thats like 3rd grade stuff!!

A prime number has only 2 factors which are 1 and itself. Composite numbers are everything else except 1 and 0. 1 and 0 are neither prime, nor composite. yes, there are 8 digit prime numbers.

8 is a even number 17 is a prime number

The first prime number after 8 is 11

17 is a prime number. 8 and 12 are not prime numbers.

8 is NOT a prime number. It is divisible by 2, for example.

The prime number before 8 is 7.

The prime number between 8 and 13 is 11.

The only prime number divisible by 7 is 7. There are no prime numbers divisible by 8.

8 is not a prime number, so it can't be a prime factor.

No. 5 is the third prime number.

8 is not a prime factor of 30. The prime factorization of 30 is 2x3x5.

No, 8 isn't a prime number. The prime factorization of 64 is 26

As 8 is even it can be divided by 2 then it's not a prime number The only even number that is prime is 2

no neither are prime

No, it can't. If a number ends in 8, it is divisible by 2, itself, and 1, so it is not prime.

No it is not because there is 1,2,4, and 8. It is a composite number.

Is 8 a prime number? NOO!! It is a composite number. It has more than two factors: 1, 2, 4, 8. =)

no, they are both composite.

8 is a composite number but 7 is a prime number

No.

29 is a prime number. 15, 81, and 8 are composites.