999999999999999 - 999999999999997
Maybe I'm just getting incurably academic, but I think "I found a bug!" is not nearly as interesting as "I found a bug!" and one of:1) It affects millions of people!2) It affects large amounts of money!3) It is a great example of a new or rare class of bug. Here's how you can avoid introducing similar bugs into your code! Here's how we can detect these things automatically! etc.Here, the only thing that springs to mind is IEEE floating point being used internally by Google Calculator for some reason, which I find hard to believe. Where's the insight?