100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
A googol is 10100, a googoplex is 10GOOGOL. Originally, it was defined by: "One, followed by writing zeroes until you get tired." However, since different people get tired at different times, it was formally defined in the above manner. To give you an idea of how truly large this number is, if you attempted to print one googoplex of zeroes on paper, you would run out of material in the entire universe. In fact, even if you could create the needed material from nothing, there wouldn't be enough space in the universe to hold it all. Fun fact here. 1 Googoplex to the power of one googoplex isn't even close to infinity. It would be like a single subatomic particle compared to an entire universe.
It is estimated that there are over 1 trillion blades of grass on Earth.
* One thousand billion = trillion * One thousand trillion = quadrillion * One thousand quadrillion = quintillion * One thousand quintillion = sextillion * One thousand sextillion = septillion * One thousand septillion = octillion * One thousand octillion = nonillion * One thousand nonillion = decillion And to take it just a bit further, a googol is a term coined by American mathematician Edward Kasner to indicate a really, really large number: the number 1, followed by 100 zeros. And even further than that is a googoplex, which is equal to 1 followed by a googol of zeros.