According to astrophysicist Arthur Eddington (1882~1944) there are exactly 15 747 724 136 275 002 577 605 653 961 181 555 468 044 717 914 527 116 709 366 231 425 076 185 631 031 296 protons in the universe and the same number of electrons.
Modern estimates are closer to 10^80…
