# Hexadecimal Constants

A hexadecimal constant is an alternative way to represent numeric constants. A hexadecimal constant takes one of the following forms:

Z'd[d...]'

Z"d[d...]"

d | Is a hexadecimal (base 16) digit (0 through 9, or an uppercase or lowercase letter in the range of A to F).

You can specify up to 128 bits (32 hexadecimal digits) in hexadecimal constants.

## Examples

Valid Hexadecimal Constants
`Z'AF9730'`
`Z"FFABC"`
`Z'84'`

Invalid Hexadecimal Constants
`Z'999.'` | Decimal not allowed.
`ZF9"` | No quotation mark after the Z.

Parent topic: Binary, Octal, Hexadecimal, and Hollerith Constants

## See Also

Alternative Syntax for Binary, Octal, and Hexadecimal Constants