The number of Planck volumes (cubic Planck lengths) in the observable universe is around \(4.65 \times 10^{185}\).[1]

One Planck length is \(1.616 \times 10^{-35}\) meters, and the volume of the observable universe is \(\approx 4 \times 10^{80}\) cubic meters.


Notation Approximation
Scientific notation \(4.65\times 10^{185}\)
BEAF {10,185}
Fast-growing hierarchy \(f_2(607)\)


Community content is available under CC-BY-SA unless otherwise noted.