Math - Prime & Composite Numbers

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

What are the factors of the prime number 7?

Back

1 and 7.

Front

What are the factors of the composite number 12?

Back

1, 2, 3, 4, 6, 12.

Front

Is the number 1 a prime number? Why or why not?

Back

No, because it only has one positive divisor, which is itself.

Front

Is the number 63 prime or composite?

Back

Composite, because it has divisors other than 1 and 63.

Front

Identify whether the number 73 is prime or composite.

Back

Prime, because its only factors are 1 and 73.

Front

What is the smallest prime number?

Back

2.