A composite number, unlike a prime number, is represented by the product of two or more natural numbers.

He used his alphanumeric skills to create a computer program.

Saburo is my best friend.

Suro is my best friend.

Kazumasa is my best friend.

The doctor measured my pulse rate.

My heart rate increases after exercise.

Let's compare the positions of point A and point B on the number line.

In the world of mathematics, an abundant number refers to a number where the sum of its divisors is greater than the original number.

In mathematics, a perfect number refers to a number where the sum of its divisors, excluding the number itself, equals the number.