doctoral_advisor birth_place nationality fields workplaces birth_date known_for doctoral_students article_title name alma_mater
oscar s. rothaus new bedford , ma united states mathematics computer science purdue university university of georgia university of rochester 21 february 1945 wagstaff prime richard sunseri william speirs samuel s. wagstaff , jr. .
 samuel s. wagstaff , jr. cornell university and mit
samuel s. wagstaff , jr. .

samuel standfield wagstaff , jr. -lrb- born 21 february 1945 -rrb- is an american mathematician and computer scientist born in 1945 , whose research interests are in the areas of cryptography , parallel computation , and analysis of algorithms , especially number theoretic algorithms .
he is currently a professor of computer science and mathematics at purdue university who coordinates the cunningham project , a project to factor numbers of the form `` b '' `` n '' ± 1 , since 1983 .
he has authored/coauthored over 50 research papers and two books .
wagstaff received his bachelor of science in 1966 from massachusetts institute of technology .
his doctoral dissertation was titled , on infinite matroids , ph.d. in 1970 from cornell university .
in 1980 wagstaff coauthored with paul erdős a paper entitled `` the fractional parts of the bernoulli numbers '' in the illinois journal of mathematics , giving him an erdős number of 1 .
wagstaff was one of the founding faculty of center for education and research in information assurance and security -lrb- cerias -rrb- at purdue , and its precursor , the computer operations , audit , and security technology -lrb- coast -rrb- laboratory .
