Bryant Tuckerman

Louis Bryant Tuckerman, III (November 28, 1915 – May 19, 2002) was an American mathematician born in Lincoln, Nebraska. He was a member of the team that developed the Data Encryption Standard (DES).^[1]

Bryant Tuckerman
Born	(1915-11-28)November 28, 1915 Lincoln, Nebraska, U.S.[1]
Died	May 19, 2002(2002-05-19) (aged 86) Briarcliff Manor, New York, U.S.[1]
Alma mater	Princeton University Antioch College[1]
Scientific career
Fields	Mathematics
Institutions	Cornell University Oberlin College

He studied topology at Princeton, where he invented the Tuckerman traverse method for revealing all the faces of a flexagon.^[1]

On March 4, 1971, he discovered the 24th Mersenne prime,^[2][3] a titanic prime, with a value of

${\displaystyle 2^{19937}-1}$.