Hollom's number, named after its inventor Lawrence Hollom, is equal to Ia(200) using the iota function, where a is the number of Planck times in \(1.17866 \times 10^{54}\) years (about \(6.895 \times 10^{104}\)).[1] It is a thought experiment like the function used to define it, and it is not a well-defined number.


  1. Hollom, Lawrence. Iota function