Mathematician:Horace Scudder Uhler

Mathematician
American physicist who worked on geometrical optics, spectroscopy and X-rays.

As a mathematician, demonstrated several Mersenne numbers to be composite without finding one single Mersenne prime.

Also calculated the values of many irrational numbers such as logarithms, reciprocals and roots to a colosssal number of decimal places.

Published the value of $\log_{10} \left({9^{9^9} }\right)$ to $250$ decimal places in $1947$. Apparently he found such work relaxing.

Nationality
American

History

 * Born: August 5, 1872 in Baltimore, USA
 * Died: December 6, 1956

Theorems and Definitions

 * Factorial of $450$
 * Largest Integer Expressible by 3 Digits: Logarithm Base $10$ to $250$ places

Publications

 * 1907: Atlas of Absorption Spectra