Number.MAX_SAFE_INTEGER
Number.MAX_SAFE_INTEGER is a JavaScript property in the Number category. Maximum safe integer. The syntax is Number.MAX_SAFE_INTEGER. A typical example: Number.MAX_SAFE_INTEGER // 9007199254740991. A close sibling is Number.prototype.toFixed(), which formats a number using fixed-point notation. A close sibling is Number.prototype.toExponential(), which returns a string in exponential notation. A close sibling is Number.prototype.toPrecision(), which returns a string with specified precision. A close sibling is Number.prototype.toString(), which returns a string in the specified radix (base). More about this category: Number methods for numeric operations — toFixed, parseInt, isNaN, and more. Related Number methods: Number.prototype.toFixed(), Number.prototype.toExponential(), Number.prototype.toPrecision(), Number.prototype.toString(), Number.isNaN(), Number.isFinite(), Number.isInteger(), Number.isSafeInteger(). This page is part of the free JS Reference documentation covering 1027+ methods, each with syntax, parameters, return values, examples, and common pitfalls. You can try Number.MAX_SAFE_INTEGER immediately in the JavaScript playground, look up unfamiliar terms in the glossary, or return to the JS Reference homepage.