How to denote different numeral systems while typing?

Question

I know that this isn't exactly a programming question, but it's related to the subject for me. How do you denote different numeral systems in just text? (By text I mean able to type at a proper speed and not copy-pasting it from another program.) For example if i have a number in base 2 how do I type it so others can understand that it's a base 2 number. On paper you can do something like (1001)2 where 2 is a small index. Is there some specific symbol that you have to type before the 2 so that others understand it as subscript? (Exponentiation uses the symbol ^ for this.) Or is it all just random and no standard exists in it?

Answer 1

A convention in many programming languages is

0b1001

where the "b" indicates binary. Other conventions include starting with 0x for hexadecimal and starting with just 0 (followed by other digits) for octal.

Answer 2

For hex, you'd prefix it with 0x.

0xFF

For Binary, a 0b

0b101

For Octal, a 0o

0o44

Alternatively, be more explicit?

dec(123)
hex(0AF)
bin(101)
oct(111)