Big numbers can store any number of significant figures

BigSignificantFigures.js

// Creating a Big object is easy, simply pass the number you want
// as a string argument to the constructor.

var myBig = new Big("2.00000000000000000000000000000000000001");

// When we want to see its value, all digits are preserved.

myBig.toString();
// = "2.00000000000000000000000000000000000001"

// When doing math on Big objects, the digits are preserved
// and the result is another Big object.

myBig.times(new Big("2")).toString();
// = "4.00000000000000000000000000000000000002"

// We can store large, numbers like these digits of PI:

var pi = new Big("3.1415926535897932384626433832795028841971693993751058209749445923078164062");

pi.toString();
// = "3.1415926535897932384626433832795028841971693993751058209749445923078164062"

pi.times(new Big("2")).toString();
// = "6.2831853071795864769252867665590057683943387987502116419498891846156328124"