# Composite numbers

It is likely that it is best to, prior to addressing a definition of Composite Numbers, is to briefly review some concepts that will allow you to understand these kinds of numbers within their precise context.

## Fundamental definitions

In this sense, it may also be prudent to focus this review on two basic notions: the first, the concept of natural numbers, which will allow us to understand the nature of the numbers to which the category of composite numbers belongs. Also, it will be relevant to review the Prime Numbers. Here are each of these definitions:

## Natural numbers

In this way, it will begin to say that Mathematics has defined natural numbers as all those integers and integers, located to the right of zero, in the Number line, with which you can count the elements of a set, as well as give them an order, assign them a position, or on the other hand express accounting amounts.

According to the specialists, the Natural Numbers can be understood equally as the oldest numbers within Humanity, believing that these were the first numbers, developed on the basis of the concept of quantity. Therefore, they are credited with having served as a tool for primitive man, in his task of counting and ordering the world around him.

## Prime numbers

For its part, prime numbers will be defined by Mathematics as those natural numbers – that is, integers and positives – greater than zero (0) that are characterized by having only two dividers, these being one (1) and the same number. In this sense, all prime numbers will also have the impossibility of being expressed as products of lower natural numbers, so it is said then that prime numbers cannot be factored.

## Composite numbers

With these definitions in mind, it may be much easier to approach a definition of Composite Numbers, which will basically be understood as all those integers, positive and greater than zero (0) that have more than two dividers, being the one (1), the same number, and another or other numbers that are between the 1 and the composite number, situation that can be expressed mathematically by speaking as follows:

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Likewise, unlike Prime Numbers, Composite Numbers may be expressed as the product of lower-value natural numbers, so it is then said that Composite Numbers can be factored, or then expressed that is, they can be broken down into their various prime factors.

## Number one

Similarly, it will be important to say that the number one, even though it has no more than two dividers, is not considered a prime number, which however does not mean that this numeric element is then considered an Integer, since by convention –even cu ando is taken as a divider- the number one (1) is neither prime nor composite.

## Main composite numbers

Similarly, Mathematics points out that Composite Numbers are infinite. However, you can choose to express which are the compound numbers that exist between the 4, which will be recognized as the lowest value composite number, since the 2 is the only prime pair number, and the 100. Below, the first s Composite numbers 4 to 100:

4, 6, 8, 9, 10, 12, 14, 15, 16, 18, 20, 22, 24, 25, 26, 27, 28, 30, 32, 33, 34, 35, 36, 38, 39, 40, 42, 44, 45, 46, 48, 49, 50, 51, 52, 54, 55, 56, 57, 58, 60, 62, 63, 64, 65, 66 , 67, 68, 69, 70, 72, 74, 75, 76, 77, 78, 80, 81, 82, 84, 85, 86, 87, 88, 90, 91, 92, 93, 94, 95, 96, 98, 99, 100

Picture: pixabay.com

Composite numbers
Source: Education
September 21, 2019