Prime and Composite Numbers

Front

Which of these numbers is not prime? Options: 17, 25, 23, 37

Back

25

Front

Name the next 3 prime numbers after 23.

Back

29, 31, 37

Front

Which of the following numbers is not composite? Options: 24, 40, 66, 61

Back

61

Front

Name the 5th prime number.

Back

11

Front

How many prime numbers are there between 1 and 100?

Back

25

Front

Which is the only prime number that is even?

Back

2

Front

Number 27 is both ...

Back

odd and composite

Front

How many prime numbers are there between 80 and 89?

Back

2

Front

A number that has only two factors, 1 and itself, is called a _______ number.

Back

prime

Front

A number that has more than 2 factors is called a __________ number.

Back

composite