Idle Big Numbers Crash

Hello!

I am working on an Idle game in which there are 8 generators.
Generator1 generates currency
Generator2 generates Generator1
etc.

For debugging I've set Generator2 to 500.
When Generator1's count gets to ~10.400, Unity crashes.

I have no idea why. Sometimes when it crashes it gives an error "Array index out of range" in the names array{"Million", "Billion", etc.}.

This is the format function I use.

Code (CSharp):

1. public string FormatDouble(double number)
2.     {
3.         double _number = number;
4.         int i = 0;
5.         while(_number>=1000)
6.         {
7.             _number = _number / 1000;
8.             i++;
9.         }
10.         if(i<2)
11.         {
12.             return string.Format ("{0:#,0.###}", number);
13.         }
14.         else if(i>=2)
15.         {
16.             return string.Format("{0:0.000}", _number) + " " + names [i-2];
17.         }
18.         else return "NaN";
19.     }

 

Clamp your index;

Code (CSharp):

1. names[Mathf.Clamp(i-2, 0, names.Length-1)]