That number is TL;DR. 😂
That doesn't even look like a real number. Looks like your number pad has a stutter.
Discussion
Your Casio calculator can't handle the truth about 2^256
The estimated number of atoms in the observable universe, approximately 10^80, can be expressed as a power of two.
To convert this to a power of two, we can use the logarithm base 2:
10^80≈2^266.5
So, the number of atoms in the observable universe is roughly 2^266.5. This means there are about 2^266 atoms, with a small fraction more to account for the decimal.