Prime & Composite

Front

What is a prime number?

Back

A prime number is a number greater than 1 that has exactly two factors: 1 and itself.

Front

What is a composite number?

Back

A composite number is a number that has more than two factors.

Front

Which number is a prime number: 1, 2, or 3?

Back

2 is a prime number.

Front

What are the only factors of a prime number?

Back

The only factors of a prime number are 1 and itself.

Front

Which number is NOT prime: 5, 11, or 15?

Back

15 is NOT a prime number.

Front

List the first five prime numbers.

Back

2, 3, 5, 7, 11.

Front

What is the smallest prime number?

Back

The smallest prime number is 2.

Front

Can a prime number be even?

Back

Yes, the only even prime number is 2.

Front

What is the difference between prime and composite numbers?

Back

Prime numbers have exactly two factors, while composite numbers have more than two factors.

Front

Is 0 a prime number?

Back

No, 0 is not a prime number.