Excel stores all numbers as machine-precision doubles. A number may appear to be an integer in Excel when no decimal point is displayed, however internally the number is stored as a floating point. Whether a decimal point is displayed is a matter of formatting. See Excel Number Formats for more information. Maximum and minimum numbers that can be natively stored in Excel are defined by machine-precision limits. $MaxMachineNumber | 1.7976931348623157*^308 | $MinMachineNumber | 2.2250738585072014*^-308 |
Excel number limits. Outside of this range, numbers can be stored as Mathematica text expressions. |
