You will see Hex (Hexadecimal), Dec (Decimal), Oct (Octal) and Bin (Binary) radio buttons. These are used for converting numbers between these numbering systems.

Linux provides commands for converting numbers from one base to another. Learn how to uses these commands and how to make the process easier with scripts and aliases.

For the 15,340 example this produces 3BEC in hex. You may wish to convert the date back to decimal using a calculator or other application to ensure the result is correct.