ActionScript for Flash MX: The Definitive Guide, 2nd Edition By Colin Moock
Chapter 18. ActionScript Language Reference
Number.MIN_VALUE Property
Flash 5
the smallest representable positive number in ActionScript
read-only
Number.MIN_VALUE
Description
The MIN_VALUE property stores the smallest representable positive number in ActionScript, 4.94065645841247e-324 (not to be confused with -Number.MAX_VALUE, the most-negative number allowed in ActionScript).