This is documentation for Mathematica 8, which was
based on an earlier version of the Wolfram Language.
View current documentation (Version 11.2)

ComputerNumber

ComputerNumber[x]
gives the object equivalent to the ordinary number x in the arithmetic currently in effect.

gives the object whose value is , where b is the base in the arithmetic currently in effect.

is the complete data object that makes up a computer number.