Prime and Composite Numbers

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 greater than 1 that has more than two positive divisors.

Front

Is 1 a prime number or a composite number?

Back

1 is neither a prime nor a composite number.

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

What is a factor?

Back

A factor is a number that divides another number without leaving a remainder.

Front

What is the greatest common factor (GCF)?

Back

The GCF is the largest number that is a factor of two or more numbers.

Front

What is the least common multiple (LCM)?

Back

The LCM is the smallest number that is a multiple of two or more numbers.

Front

How can you determine if a number is prime?

Back

To determine if a number is prime, check if it has only two factors: 1 and itself.

Front

What is the prime factorization of 12?

Back

The prime factorization of 12 is 2 x 2 x 3.