Eddington Number - charlesreid1

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Mathematical Constants

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The Most Beautiful Formulas

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Arthur Eddington's estimate of the total number of protons in the observable universe:

$N_{Edd}\approx 15,747,724,136,275,002,577,605,653,961,181,555,468,044,717,914,527,116,709,366,231,425,076,185,631,031,296$

or,

$N_{Edd}\approx 1.57\times 10^{79}$

Link: https://en.wikipedia.org/wiki/Eddington_number

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