Prime/Composite 11/20

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

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

Is the number 1 a prime number?

Back

No, 1 is not a prime number.

Front

Is the number 2 a prime number?

Back

Yes, 2 is the only even prime number.

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.

Front

What is the smallest composite number?

Back

The smallest composite number is 4.

Front

If a number is even and greater than 2, is it prime?

Back

No, all even numbers greater than 2 are composite.

Front

What are the prime factors of 30?

Back

The prime factors of 30 are 2, 3, and 5.