Primes and Composites

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.

Front

What is a composite number?

Back

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

Front

Is 2 a prime number?

Back

Yes, 2 is a prime number because it can only be divided by 1 and 2.

Front

Is 4 a prime number?

Back

No, 4 is a composite number because it can be divided by 1, 2, and 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

What is the smallest prime number?

Back

The smallest prime number is 2.

Front

What is the largest single-digit prime number?

Back

The largest single-digit prime number is 7.

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 distinct positive divisors, while composite numbers have more than two.