Largest Recorded Number What Is The Largest Number You Can Write That Is Not Infinity?

What is the largest number you can write that is not infinity? - largest recorded number

I have a whole series today. It has 2 ^ 64. Although very large, 2 ^ 65 is ten times bigger! Then I began to think that 10 ^ (10 ^ 10) would be a ten billion zeros. Is that all? What is that someone has written? Add 1 and if I hold the record then?
Jim (current holder of the Guinness World Record for the greatest number) written.