Large numbers are used mostly used in astronomy and cosmology. According to the Big Bang Model, the universe is estimated to be seconds old, the observable universe is meters, and it contains stars.
In computing, if a hacker attempts to open a computer with up to a 40-character password, we should really wish him luck. Even though he may create a program that would display 1 billion strings per second indefinitely, it would take him seconds or about years to complete all the combinations. That is way, way older than the universe which is only about 13.7 billion years old. » Read more