prime and 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

Is 17 a prime number?

Back

Yes, 17 is a prime number because it can only be divided by 1 and 17.

Front

Is 12 a composite number?

Back

Yes, 12 is a composite number because it can be divided by 1, 2, 3, 4, 6, and 12.

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

What is the largest two-digit prime number?

Back

The largest two-digit prime number is 97.

Front

How can you tell if a number is composite?

Back

A number is composite if it has more than two factors.

Front

Is 51 a prime number?

Back

No, 51 is not a prime number because it can be divided by 1, 3, 17, and 51.

Front

What is the difference between prime and composite numbers?

Back

Prime numbers have exactly two distinct positive divisors (1 and itself), while composite numbers have more than two.