--
I believe there are
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.
The Philosophy of Physical Science. Cambridge, 1939. - Eddington, Sir
Arthur (1882-1944)