These are two terms that are very useful and can often come in handy when solving problems:

1) A prime number is a number that has only two divisors: 1 and the number N itself, and no other divisors.

2) A number is called composite if, in addition to 1 and N, it has other divisors.

In the next post, we will discuss what the greatest common divisor is and the problems of multiplying large numbers in C, JavaScript, and other languages. This puzzles many people.

Thank you.