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# What are natural numbers?

We explain what natural numbers are and some of their characteristics. The greatest common factor and the least common multiple.

1. ### What are natural numbers?

Natural numbers are the numbers that in the history of man first served to tell the objects , not only for accounting but also for ordering them. These numbers start from the number 1. There is no total or final amount of naturals numbers, they are infinite.

The naturals numbers are: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 … etc. As we see these numbers do not accept fractions (decimals). It should be clarified that the number zero is sometimes considered a natural number , but generally it is not.

On the other hand, it is said that naturals numbers always have a successor number. And natural numbers do not discriminate between numbers even and odd , the include them all. They do not accept fractions or negative numbers. They are distinguished from integers, since integers also comprise negative numbers. As for the written expression of naturals numbers, these are represented by the letter N, in uppercase.

Natural numbers are also the primary basis on which all mathematical operations and functions are based , addition, subtraction, multiplication and division. Also to trigonometric functions and equations. In short, they are the basic elements without which mathematics could not occur, also all the sciences that use this type of calculations such as geometry, engineering, chemistry , physics , all require mathematics and naturals numbers.