Microsoft® Visual Basic® Scripting Edition Exp Function 
Language Reference Version 1

Returns e (the base of natural logarithms) raised to a power.
Exp(number)The number argument can be any valid numeric expression.
If the value of number exceeds 709.782712893, an error occurs. The constant e is approximately 2.718282.
Note The Exp function complements the action of the Log function and is sometimes referred to as the antilogarithm.