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 87 a Prime Number?

A: The number 87 is not a prime number. The factors of 87 are 1, 3 and 29. A prime number must have only two factors, the numbers one and the number itself. Full Answer >Filed Under: -
Q:
## Is 7 a Prime Number?

A: Seven is a prime number. A prime number is a positive number that only has two possible divisible numbers. A prime number can only be divided by one and it... Full Answer >Filed Under: -
Q:
## Is 57 a Prime Number?

A: The number 57 is not a prime number because it has factors other than one and 57. Three and 19 are also factors of 57. Full Answer >Filed Under: -
Q:
## Is 33 a Prime Number?

A: The number 33 is not a prime number. Prime numbers only have factors of themselves and 1. The positive factors of 33 are 1, 3, 11 and 33. Full Answer >Filed Under: