What is the biggest number known to man?

Many people think that the biggest number known to man is a googolplex, or 10 to the power of a googol. This is in fact false. The largest number that has been named by man is a Graham's number. It is so unimaginably huge that a whole new mathematical notation had to be invented simply to write it. Graham's number is written as 3 3. It would take a long time to explain this notation, if you want to learn further, try researching it on the internet. Needless to say, it is pretty big!

Of course, this is only the largest named number. You could get Graham's number plus one, but to be honest, what's the point? Graham's number dwarfs anything we can possibly compare it to.