# Number Constants (JavaScript)

The following number constants are properties of the `Number`

object.

## Number Object Constants

You do not have to create `Number`

object to access these constants.

Constant | Value returned |
---|---|

`Number.EPSILON` |
The smallest number that can be represented in JavaScript. Equal to approximately 2.2204460492503130808472633361816E-16. |

`Number.MAX_SAFE_INTEGER` |
The largest number that can be safely represented in JavaScript. Equal to 9007199254740991. |

`Number.MAX_VALUE` |
The largest number that can be represented in JavaScript. Equal to approximately 1.79E+308. |

`Number.MIN_SAFE_INTEGER` |
The smallest number that can be safely represented in JavaScript. Equal to -9007199254740991. |

`Number.MIN_VALUE` |
The closest number to zero that can be represented in JavaScript. Equal to approximately 5.00E-324. |

`Number.NaN` |
A value that is not a number. In equality comparisons, `NaN` does not equal any value, including itself. To test whether a value is equivalent to `NaN` , use the isNaN function. |

`Number.NEGATIVE_INFINITY` |
A value that is less than the largest negative number that can be represented in JavaScript. JavaScript displays `NEGATIVE_INFINITY` values as `-infinity` . |

`Number.POSITIVE_INFINITY` |
A value greater than the largest number that can be represented in JavaScript. JavaScript displays `POSITIVE_INFINITY` values as `infinity` . |

## Requirements

Supported in the following document modes: Quirks, Internet Explorer 6 standards, Internet Explorer 7 standards, Internet Explorer 8 standards, Internet Explorer 9 standards, Internet Explorer 10 standards, Internet Explorer 11 standards. Also supported Store apps (Windows 8 and Windows Phone 8.1). See Version Information.

For `Number.EPSILON`

, `Number.MAX_SAFE_INTEGER`

, and `Number.MIN_SAFE_INTEGER`

:

Supported in Microsoft Edge (Edge browser). Also supported in Store apps (Microsoft Edge on Windows 10). See Version Information.

Not supported in the following document modes: Quirks, Internet Explorer 6 standards, Internet Explorer 7 standards, Internet Explorer 8 standards, Internet Explorer 9 standards, Internet Explorer 10 standards, Internet Explorer 11 standards. Not supported in Windows 8.1.

**Applies To**: Number Object

## See Also

Math Constants

JavaScript Constants

Infinity Constant

NaN Constant

isNaN Function