It's a large number but not close to the count of atom: https://www.wolframalpha.com/input/?i=2%5E256 https://www.wolframalpha.com/input/?i=2%5E256 > ≈ 0.0012

It's a large number but not close to the count of atom: https://www.wolframalpha.com/input/?i=2%5E256 https://www.wolframalpha.com/input/?i=2%5E256 > ≈ 0.0012 × the number of atoms in the visible universe (≈ 10^80)