The number system that results depends on what base is used for the digits: any base is possible, but a prime number base provides the best mathematical properties.
These 10 symbols are called digits. [1] A symbol for a number is made up of these 10 digits. The position of the digits shows how big the number is. For example, the number 23 in the decimal number system really means (2 times 10) plus 3. Similarly, 101 means 1 times a hundred (=100) plus 0 times 10 (=0) plus 1 times 1 (=1).