Question

73

Extremely large numbers in javascript

rated 0 times [ 74] [ 1] / answers: 1 / hits: 51363 / 9 Years ago, sat, june 6, 2015, 12:00:00

I'm working on the Project Euler problems (currently question 13).

For this question I have to find the first 10 digits of the sum of 100 numbers all of a size similar to this:

91,942,213,363,574,161,572,522,430,563,301,811,072,406,154,908,250

I think I could use something like Java's BigInteger, but I started solving the problems in JavaScript (I'm trying to boost my js abilities for work), and I would like to continue using it, even to solve this problem.

I'd like to stick to pure JS if possible.

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yvettel

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answered 9 Years ago tierra · Accepted Answer

You are going to need a javascript based BigInteger library. There are many to choose from. Here is one https://github.com/peterolson/BigInteger.js

You can use it like this

var n = bigInt(91942213363574161572522430563301811072406154908250)

    .plus(91942213363574161572522430563301811072406154908250);