Number.MIN_SAFE_INTEGER
Baseline Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.
The Number.MIN_SAFE_INTEGER static data property represents the minimum safe integer in JavaScript, or -(253 - 1).
To represent integers smaller than this, consider using BigInt.
Try it
Value
-9007199254740991 (-9,007,199,254,740,991, or about -9 quadrillion).
Property attributes of Number.MIN_SAFE_INTEGER | |
|---|---|
| Writable | no |
| Enumerable | no |
| Configurable | no |
Description
Double precision floating point format only has 52 bits to represent the mantissa, so it can only safely represent integers between -(253 – 1) and 253 – 1. Safe in this context refers to the ability to represent integers exactly and to correctly compare them. For example, Number.MIN_SAFE_INTEGER - 1 === Number.MIN_SAFE_INTEGER - 2 will evaluate to true, which is mathematically incorrect. See Number.isSafeInteger() for more information.
Because MIN_SAFE_INTEGER is a static property of Number, you always use it as Number.MIN_SAFE_INTEGER, rather than as a property of a number value.
Examples
Using MIN_SAFE_INTEGER
Number.MIN_SAFE_INTEGER; // -9007199254740991
-(2 ** 53 - 1); // -9007199254740991
Specifications
| Specification |
|---|
| ECMAScript Language Specification # sec-number.min_safe_integer |
Browser compatibility
BCD tables only load in the browser