bignum - w3toppers.com

What is the standard solution in JavaScript for handling big numbers (BigNum)?

Update(2019-08-19): BigInt is now part of Firefox and Chrome; you no longer need a library: const bigInt1 = 1111111111111111111111111111111n; const bigInt2 = BigInt(“1111111111111111111111111111111″) console.log((bigInt1 + bigInt2)+””) Original answer: If you need arbitrary-precision decimal numbers, use Javascript-bignum, as it is correct and fast.

Fast bignum square computation

If I understand your algorithm correctly, it seems O(n^2) where n is the number of digits. Have you looked at Karatsuba Algorithm? It speeds up multiplication using the divide and conquer approach. It may be worth taking a look at.