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Bryant Tuckerman died on May 19, 2002, at the age of 86.
Dr. Tuckerman obtained a Ph.D. in topology from Princeton
University. He taught mathematics at Cornell
University and Oberlin College. Then he worked for
five years at the Institute for Advanced Study with John
von Neumann on applications of early computers. He
spent the remaining 35 years of his professional career at
the IBM T. J. Watson Research Center in the Mathematics
Department, where he received many awards for his
pioneering work on applications of computers for scientific
calculations, number theory, cryptography and data
security. In 1971 he published what was then the
largest known prime number, the "24th Mersenne prime"
219937-1. He was a key member of the IBM
team that developed the "Data Encryption Standard" DES,
which was officially adopted by the U.S. government in
1976. In 1983, 1988 and 2002, he was a coauthor (with
Brillhart, Lehmer, Selfridge and Wagstaff) of a book on
factorizations of numbers
bn+1. (by S. S. Wagstaff,
31 May 2002)
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