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 positive integer that has at least one positive divisor other than one or itself, meaning it can be divided evenly by numbers other than 1 and itself.

Front

Is the number 1 considered a prime number?

Back

No, the number 1 is not considered a prime number.

Front

List the first five prime numbers.

Back

The first five prime numbers are 2, 3, 5, 7, and 11.

Front

What is the smallest prime number?

Back

The smallest prime number is 2.

Front

Is the number 15 prime or composite?

Back

The number 15 is composite.

Front

What is the largest prime number less than 20?

Back

The largest prime number less than 20 is 19.

Front

How can you determine if a number is prime?

Back

To determine if a number is prime, check if it has any divisors other than 1 and itself. If it does, it is composite.

Front

What is the prime factorization of 12?

Back

The prime factorization of 12 is 2 x 2 x 3 (or 2^2 x 3).

Front

Is 37 a prime number?

Back

Yes, 37 is a prime number.