parseInt and Number casting result in different number from string

Question

I'm trying to get a number from a string but it's returning the wrong value

Number("580682945690490185")
580682945690490200

parseInt("580682945690490185")
580682945690490200

`console.log(580682945690490185)` nothing to do with the methods. — epascarello, Apr 15 '20 at 00:27
https://stackoverflow.com/questions/1379934/large-numbers-erroneously-rounded-in-javascript — epascarello, Apr 15 '20 at 00:28
Does this answer your question? [Large numbers erroneously rounded in JavaScript](https://stackoverflow.com/questions/1379934/large-numbers-erroneously-rounded-in-javascript) — Stephen P, Apr 15 '20 at 01:02

score 2 · Accepted Answer · answered Apr 15 '20 at 00:47

2

That number is bigger than the maximum safe number as in IEEE 754 you can only safely represent numbers between -(2^53 - 1) and 2^53 - 1.

You should try with BigInt which has no limit

answered Apr 15 '20 at 00:47

Juan Diego Lozano

1 Answers1