Number.MIN_SAFE_INTEGER

The Number.MIN_SAFE_INTEGER constant represents the minimum safe integer in JavaScript, or -(2⁵³ - 1).

To represent integers smaller than this, consider using BigInt.

Value

-9007199254740991 (-9,007,199,254,740,991, or about -9 quadrillion).

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.