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 that has more than two positive divisors.

Front

What is a factor?

Back

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

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 1 a prime number?

Back

No, 1 is not a prime number.

Front

Is 2 a prime number?

Back

Yes, 2 is the only even prime number.

Front

What is the prime factorization of 30?

Back

2 x 3 x 5

Front

What is the prime factorization of 54?

Back

2 x 3 x 3 x 3 (or 2 x 3^3)

Front

Find a factor of 36.

Back

2, 3, 4, 6, 9, 12, 18, 36 (any of these are correct)