Javascript Number() interface is returning wrong number

Question

I'm using Number() to convert an input into number and it is returning the wrong number.

Couldn't find a reason for this:

const aux = Number("3721250857372431234");

console.log(aux)

it will print 3721250857372431400 instead of 3721250857372431234

That number is larger than can be accurately represented by the Number type. If you need integers that large you may need to use [BigInts](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/BigInt) — Nicholas Tower, Sep 07 '22 at 15:58
This has almost nothing to do with TypeScript aside from being the language the problem was found in. Mind editing to change it to JavaScript? — kelsny, Sep 07 '22 at 16:01

score 1 · Accepted Answer · answered Sep 07 '22 at 15:59

1

Your number is bigger than the maximum safe integer and therefore the precision cannot be guaranteed.

answered Sep 07 '22 at 15:59

JRose

1 Answers1