If it takes you 2 seconds to count to 10 and 60 seconds to count to 100, and numbers get longer and harder to say the more digits you gain, how long would it take you to count to 1 centillion? Here's what it looks like.
1,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000
Or, 10 to the 300th power. For comparison, a Googol is 10 to the hundredth power. A googolplex is 10 to the 10 to the 100th power, or 10 to the googul-th power. Graham's number goes like this, though I'm not sure how long it is, it repeats this: 123456789