How is the basal radial indicated in the octal system?

In the octal number system, which is base 8, numbers are represented using digits from 0 to 7. To explicitly indicate that a numeral is in octal format, it is common practice to use a subscript notation. The correct way to denote numbers in the octal system is by placing a subscript eight next to the numeral.

For example, if you have the octal number 25, it would be written as 25₈, where the subscript eight signifies that the base of the number is octal. This prevents confusion with similar representations in other number systems, such as decimal (base 10) or binary (base 2).

Understanding this notation is crucial for accurately interpreting numerical values in various bases and for performing conversions between these systems.