There are plenty of numbers. Few of them are finitely infinite and few of them are finite and most of them are infinitely infinite. It just depends on the way we view. They are infinite. But within the countable set, what can be the largest number?Lets see.
Googol- 10100
Number of atoms in the body – 7*1027
Number of atoms in the observable universe- 1080
Possibilities of a 7 by 7 Rubik’s Cube – 1.95*10160
A Googolplex- 1010100
Number of different possible universe calculated by Andrei Linde and Vitaly Vanchurin – 101016
Number of different universes distinguished by each person- 1010107
Googolplexian- 101010100
Skewes Number- 10101034 to 101010963
Graham’s Number- G64
If you try to memorize the Graham’s number, your head would collapse into a blackhole.
TREE- TREE(3)
Loader’s Number- It is a C program by Ralph Loader that came in first place for the Bignum Bakeoff contest, whose objective was to write a C program (in 512 characters or less) that generates the largest possible output on a theoretical machine with infinite memory.
Ryous Number- The Smallest Number bigger than any finite number named by an expression in the language of set theory with a googol symbols or less.
A Small read here. Hope you found the largest number.
References:
1) https://www2.palomar.edu/pages/math/files/2017/12/2.E-Finitely-big-numbers-KEY.pdf
2) https://googology.wikia.org/wiki/Loader%27s_number#:~:text=program%20by%20Ralph%20Loader%20that,largest%20computable%20numbers%20ever%20devised.
3) https://www.popularmechanics.com/science/math/a28725/number-tree3/
4) NUMBERPHILE
Cosmic Writer 