How to take modulus of a large integer in javascript ?

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How to take modulus of a large integer in javascript ?
I am doing an IBAN validation as per the IBAN Algorithm.
• IBAN: GB82 WEST 1234 5698 7654 32
• Rearrange: W E S T12345698765432 G B82
• Convert to integer: 3214282912345698765432161182
• Compute remainder: 3214282912345698765432161182 mod 97 = 1

I am unable to take the modulus of the integer 3214282912345698765432161182 in javascript.

Posted 29-Apr-15 2:02am

Kandiya

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CPallini · Answer 1 · 2015-04-29T02:36:00

Solution 1

There are several big integer libraries for JavaScript, see, for instance, this Stack Overflow quastion: "What JavaScript library can I use to manipulate big integers?"[^]

Posted 29-Apr-15 2:36am

CPallini

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Sergey Alexandrovich Kryukov 29-Apr-15 9:23am

5ed.
—SA

Sebastiaan Meijerink · Answer 2 · 2015-04-30T09:56:00

Solution 2

I use this;
https://github.com/arhs/iban.js/blob/master/iban.js[^]

But you could also look at how its done in that library.

Posted 30-Apr-15 9:56am

Sebastiaan Meijerink