What is the Maximum Safe Integer in JavaScript?

JavaScript's Numerical Limits: Exploring the Upper Bounds

Understanding the maximum integer value in JavaScript is crucial for ensuring precision in your operations. Let's delve into the question: "What is JavaScript's highest integer value that a number can go to without losing precision?"

JavaScript distinguishes between two number types: Number and BigInt. The Number type, commonly used for representing floating-point numbers, has a limit defined by the IEEE 754 standard. This limit is specified by Number.MAX_SAFE_INTEGER, which is 9,007,199,254,740,991. This means that integers within this range can be represented exactly and compared correctly.

It's important to note that some operations, such as bitwise operators and shift operators, work on 32-bit integers. In this case, the maximum safe integer is significantly lower: 2,147,483,647.

For integers beyond these limits, you can use the BigInt type, which has no upper bound. BigInt is recommended for handling very large integers where precision is critical.

In summary, JavaScript's Number type has a maximum safe integer of 9,007,199,254,740,991. For 32-bit operations, the maximum value is lower: 2,147,483,647. To handle larger integers with no precision loss, BigInt should be utilized.

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