Q:
# Is 2 a Prime Number?

**Yes, 2 is a prime number.** In fact, 2 is the only even number that is prime. A prime number is a number that has only two factors, the number 1 and itself.

If a number has more than two factors, it is called a composite number. All even numbers have 2 as a factor because they are divisible by 2. Thus, even numbers other than 2 cannot be prime.

All other even numbers are classified as composite numbers. A composite number is a positive number that has at least one positive factor other than itself and 1. Four is the smallest composite number.

The number 1 is called a special number, as it has only one factor. It is neither prime nor composite. Prime numbers are odd numbers, but not all odd numbers are prime. For instance, 3 is both a prime number and an odd number. However, 33 is an odd number but not a prime number.

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Q:
## Is Three a Prime Number?

A: The number 3 is a prime number. A prime number is a positive number that can only be divided evenly by the number 1 and itself. Full Answer >Filed Under: -
Q:
## Is Two a Prime Number?

A: Two is a prime number. Two is the smallest prime number and the only even prime number, since all other even numbers divide by two. Full Answer >Filed Under: -
Q:
## What Is the Prime Factorization of 72?

A: The prime factorization of 72 is 23x 32, or 2 x 2 x 2 x 3 x 3. The prime factorization of a number involves determining the factors of a number that are al... Full Answer >Filed Under: -
Q:
## Is 63 a Prime Number?

A: Sixty-three is not a prime number. Sixty-three is classified as a composite number because it has divisors, and can be composed of other numbers than numbe... Full Answer >Filed Under: