Number.MIN_SAFE_INTEGER

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.

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.