Prime and composite

Front

What is a prime number?

Back

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

Front

Which of the following is NOT true about prime numbers? All prime numbers are odd numbers, They have exactly two factors, 1 is a factor of every prime number, No prime numbers end in zero.

Back

All prime numbers are odd numbers.

Front

What are the factors of 27?

Back

The factors of 27 are 1, 3, 9, and 27.

Front

What is one factor of 15 besides 1 and 15?

Back

One factor of 15 besides 1 and 15 is 3.

Front

Find the prime number: 10, 9, 7, 4.

Back

The prime number is 7.

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 definition of factors?

Back

Factors are numbers that can be multiplied together to get another number.

Front

How many factors does a prime number have?

Back

A prime number has exactly two factors.