Mathematician:Charles-Ange Laisant

Mathematician
French politician and mathematician who published some books and founded some journals.

Determined the number of digits in $9^{9^9}$.

Nationality
French

History

 * Born: 1 November 1841 in Indre, France
 * Died: 5 May 1920

Theorems and Definitions

 * Largest Integer Expressible by $3$ Digits: Number of Digits

Publications

 * 1881: Introduction à la Méthode des Quaternions
 * 1887: Théorie et applications des equipollences


 * 1894: Founded (with )
 * 1899: Founded (with )