Prime vs Composite Numbers Flashcard

Front

What is a prime number?

Back

A prime number is a natural number greater than 1 that has exactly two distinct positive divisors: 1 and itself.

Front

What is a composite number?

Back

A composite number is a natural number greater than 1 that has more than two distinct positive divisors.

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

List the first five prime numbers.

Back

The first five prime numbers are 2, 3, 5, 7, and 11.

Front

List the first five composite numbers.

Back

The first five composite numbers are 4, 6, 8, 9, and 10.

Front

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

Back

The number 1 is neither a prime number nor a composite number.

Front

What is the difference between prime and composite numbers?

Back

A prime number has exactly two factors, while a composite number has more than two factors.

Front

Is the number 15 a prime number or a composite number?

Back

The number 15 is a composite number because it has factors 1, 3, 5, and 15.

Front

Is the number 17 a prime number or a composite number?

Back

The number 17 is a prime number because it has only two factors: 1 and 17.