Prime and Composite Numbers

Front

What is a prime number?

Back

A prime number is a natural number greater than 1 that has no positive divisors other than 1 and itself. Examples: 2, 3, 5, 7.

Front

What is a composite number?

Back

A composite number is a natural number greater than 1 that has more than two positive divisors. Examples: 4, 6, 8, 9.

Front

Is the number 1 a prime number or a composite number?

Back

Neither. The number 1 is not considered a prime or composite number.

Front

List the first five prime numbers.

Back

2, 3, 5, 7, 11.

Front

List the first five composite numbers.

Back

4, 6, 8, 9, 10.

Front

What is the smallest prime number?

Back

The smallest prime number is 2.

Front

What is the smallest composite number?

Back

The smallest composite number is 4.

Front

How can you determine if a number is prime?

Back

To determine if a number is prime, check if it has any divisors other than 1 and itself. If it does, it is composite.

Front

What is the prime factorization of 12?

Back

The prime factorization of 12 is 2 x 2 x 3 (or 2² x 3).

Front

What is the prime factorization of 30?

Back

The prime factorization of 30 is 2 x 3 x 5.