Prime and composite

Front

What is a prime number?

Back

A prime number is a 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 number that has more than two positive divisors.

Front

List the first five prime numbers.

Back

2, 3, 5, 7, 11

Front

Is 1 a prime number?

Back

No, 1 is not a prime number.

Front

What is the smallest prime number?

Back

The smallest prime number is 2.

Front

What are factors?

Back

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

Front

What is a multiple?

Back

A multiple of a number is the product of that number and an integer.

Front

Is 6 a prime or composite number?

Back

6 is a composite number because it has factors 1, 2, 3, and 6.

Front

What is the next prime number after 5?

Back

The next prime number after 5 is 7.

Front

How can you tell if a number is prime?

Back

A number is prime if it has exactly two distinct positive divisors: 1 and itself.