The Number.MIN_SAFE_INTEGER constant represents the minimum safe integer in JavaScript (-(253 - 1)).
Property attributes of Number.MIN_SAFE_INTEGER
| |
|---|---|
| Writable | no |
| Enumerable | no |
| Configurable | no |
The MIN_SAFE_INTEGER constant has a value of -9007199254740991. The reasoning behind that number is that JavaScript uses double-precision floating-point format numbers as specified in IEEE 754 and can only safely represent numbers between -(253 - 1) and 253 - 1.
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 object you created.
Number.MIN_SAFE_INTEGER // -9007199254740991 -(Math.pow(2, 53) - 1) // -9007199254740991
| Specification | Status | Comment |
|---|---|---|
| ECMAScript 2015 (6th Edition, ECMA-262) The definition of 'Number.MIN_SAFE_INTEGER' in that specification. | Standard | Initial definition. |
| ECMAScript 2017 Draft (ECMA-262) The definition of 'Number.MIN_SAFE_INTEGER' in that specification. | Draft |
| Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari |
|---|---|---|---|---|---|
| Basic support | 34 | 31 (31) | No support | (Yes) | 9 |
| Feature | Android | Chrome for Android | Firefox Mobile (Gecko) | IE Mobile | Opera Mobile | Safari Mobile |
|---|---|---|---|---|---|---|
| Basic support | (Yes) | (Yes) | 32.0 (32) | No support | No support | 9 |
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https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/MIN_SAFE_INTEGER