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The William Lowell Putnam Mathematical Competition is an annual mathematics competition for undergraduate college students, awarding scholarships and cash prizes ranging from $25,000 to $5,000. The competition was funded in 1927 by Elizabeth Lowell Putnam in memory of her husband William Lowell Putnam (Harvard 1882), who while alive was an advocate of intercollegiate intellectual competition. The exam has been offered annually since 1938 and is administered by the Mathematical Association of America.
The Putnam competition now takes place on the first Saturday in December, and consists of two three-hour sittings and a lunch break. Each competitor attempts to solve twelve problems, nearly all mathematical proofs, which can typically be solved with only basic knowledge of college mathematics but which require extensive creative thinking.
Each of the twelve questions is worth any amount from 1 to 10 points, but the most frequent scores above zero are 10 points, for a complete solution; 9 points, for a nearly-complete solution; and 1 point, for the beginnings of a solution. The examination is considered to be very difficult: it is typically attempted by students specializing in mathematics, but the average score is only one point out of 120 possible.
A participating college may have as many participants as it wishes, but its team consists of three individuals whom it designates in advance. Its team score is the sum of the three individual scores.
In December 2003, the examination was taken by 3615 students from 479 colleges.
Many contestants have gone on to become distinguished researchers in mathematics and other fields. A number of them have received the Fields Medal or the Nobel Prize in Physics.
Since the second competition in 1939, competing teams have been ranked.
| Year | First | Second | Third | Fourth | Fifth |
| 1938 | (teams were not ranked) | ||||
| 1939 | Brooklyn College | MIT | Mississippi Women's College | ||
| 1940 | Toronto | Yale | Columbia | ||
| 1941 | Brooklyn College | Penn | MIT | ||
| 1942 | Toronto | Yale | MIT | City College of New York | |
| 1946 | Toronto | MIT | Brooklyn College | Carnegie Institute of Technology | |
| 1947 | Harvard | Yale | Columbia | Penn | |
| 1948 | Brooklyn College | Toronto | Harvard | City College of New York (tie) McGill | |
| 1949 | Harvard | Toronto | Carnegie Institute of Technology | City College of New York | |
| 1950 | Caltech | Harvard | NYU | Toronto | |
| 1951 | Cornell | Harvard | Cooper Union | City College of New York | |
| 1952 | Queen's University | Polytechnic Institute of Brooklyn | Harvard | MIT | |
| 1953 | Harvard | City College of New York | Cornell | Cal Berkeley | |
| 1954 | Cornell | Harvard | MIT | Toronto | |
| 1955 | Harvard | Toronto | Yale | Kenyon | |
| 1956 | Harvard | Columbia | Queen's University | MIT | |
| 1957 | Harvard | Columbia | Cornell | Caltech | |
| Spring 1958 | Polytechnic Institute of Brooklyn | Harvard | Toronto | University of Manitoba | |
| Fall 1958 | Harvard | Toronto | Caltech | Cornell | |
| 1959 | Polytechnic Institute of Brooklyn | Caltech | Toronto | Harvard | Case Western Reserve |
| 1960 | Cal Berkeley | Harvard | MIT | Michigan State | Cornell |
| 1961 | Michigan State | MIT | Caltech | Harvard | Dartmouth |
| 1962 | Caltech | Dartmouth | Harvard | Queen's University | UCLA |
| 1963 | Michigan State | Brooklyn College | Penn | Caltech | MIT |
| 1964 | Caltech | MIT | Harvard | Case Western Reserve | Cal Berkeley |
| 1965 | Harvard | MIT | Toronto | Princeton | Caltech |
| 1966 | Harvard | MIT | Chicago | Michigan | Princeton |
| 1967 | Michigan State | Caltech | Harvard | MIT | Michigan |
| 1968 | MIT | Waterloo | UCLA | Michigan State | Kansas |
| 1969 | MIT | Rice | Chicago | Harvard | Yale |
| 1970 | Chicago | MIT | Toronto | Illinois Institute of Technology | Caltech |
| 1971 | Caltech | Chicago | Harvard | Cal Davis | MIT |
| 1972 | Caltech | Oberlin | Harvard | Swarthmore | MIT |
| 1973 | Caltech | University of British Columbia | Chicago | Harvard | Princeton |
| 1974 | Waterloo | Chicago | Caltech | MIT | University of British Columbia |
| 1975 | Caltech | Chicago | MIT | Princeton | Harvard |
| 1976 | Caltech | Washington University in St. Louis | Princeton | Case Western Reserve (tie) MIT | |
| 1977 | Washington University, St. Louis | Cal Davis | Caltech | Princeton | MIT |
| 1978 | Case Western Reserve | Washington University, St. Louis | Waterloo | Harvard | Caltech |
| 1979 | MIT | Caltech | Princeton | Stanford | Waterloo |
| 1980 | Washington University, St. Louis | Harvard | University of Maryland | Chicago | Cal Berkeley |
| 1981 | Washington University, St. Louis | Princeton | Harvard | Stanford | Maryland, College Park |
| 1982 | Harvard | Waterloo | Caltech | Yale | Princeton |
| 1983 | Caltech | Washington University, St. Louis | Waterloo | Princeton | Chicago |
| 1984 | Cal Davis (tie) Washington University, St. Louis | Harvard | Princeton | Yale | |
| 1985 | Harvard | Princeton | Cal Berkeley | Rice University | Waterloo |
| 1986 | Harvard | Washington University, St. Louis | Cal Berkeley | Yale | MIT |
| 1987 | Harvard | Princeton | Carnegie Mellon | Cal Berkeley | MIT |
| 1988 | Harvard | Princeton | Rice University | Waterloo | Caltech |
| 1989 | Harvard | Princeton | Waterloo | Yale | Rice University |
| 1990 | Harvard | Duke | Waterloo | Yale | Washington University, St. Louis |
| 1991 | Harvard | Waterloo | Harvey Mudd | Stanford | Yale |
| 1992 | Harvard | Toronto | Waterloo | Princeton | Cornell |
| 1993 | Duke | Harvard | Miami University | MIT | Michigan |
| 1994 | Harvard | Cornell | MIT | Princeton | Waterloo |
| 1995 | Harvard | Cornell | MIT | Toronto | Princeton |
| 1996 | Duke | Princeton | Harvard | Washington University, St. Louis | Caltech |
| 1997 | Harvard | Duke | Princeton | MIT | Washington University, St. Louis |
| 1998 | Harvard | MIT | Princeton | Caltech | Waterloo |
| 1999 | Waterloo | Harvard | Duke | Michigan | Chicago |
| 2000 | Duke | MIT | Harvard | Caltech | Toronto |
| 2001 | Harvard | MIT | Duke | Cal Berkeley | Stanford |
| 2002 | Harvard | Princeton | Duke | Cal Berkeley | Stanford |
| 2003 | MIT | Harvard | Duke | Caltech | Harvey Mudd |
Since the first competition, the top five scorers on the examination have been named Putnam Fellows. Within the top five, Putnam fellows are not ranked.
The following table lists all Putnam fellows from 1938 to present, with the years they placed in the top five.
| George W. Mackey (Rice) | 1938 |
| Irving Kaplansky (Toronto) | 1938 |
| Michael J. Norris (College of St. Thomas) | 1938 |
| Robert W. Gibson (Fort Hays Kansas State College) | 1938 |
| Bernard Sherman (Brooklyn College) | 1938, 1939 |
| Abraham Hillman (Brooklyn College) | 1939 |
| Richard P. Feynman (MIT) | 1939 |
| William Nierenberg (City College of New York) | 1939 |
| Edward L. Kaplan (Carnegie Institute of Technology) | 1939, 1940, 1941 |
| John Cotton Maynard (Toronto) | 1940 |
| Robert Maughan Snow (George Washington University) | 1940 |
| W. J. R. Crosby (Toronto) | 1940 |
| Andrew M. Gleason (Yale) | 1940, 1941, 1942 |
| Paul C. Rosenbloom (Penn) | 1941 |
| Richard F. Arens (UCLA) | 1941 |
| Samuel I. Askovitz (Penn) | 1941 |
| Harold Victor Lyons (Toronto) | 1942 |
| Harvey Cohn (City College of New York) | 1942 |
| Melvin A. Preston (Toronto) | 1942 |
| Warren S. Loud (MIT) | 1942 |
| Donald A. Fraser (Toronto) | 1946 |
| Eugenio Calabi (MIT) | 1946 |
| Felix Browder (MIT) | 1946 |
| J. Arthur Greenwood (Harvard) | 1946 |
| Maxwell A. Rosenlicht (Columbia) | 1946, 1947 |
| Clarence Wilson Hewlett, Jr. (Harvard) | 1947 |
| William Turanski (Penn) | 1947 |
| Eoin L. Whitney (University of Alberta) | 1947, 1948 |
| W. Forrest Stinespring (Harvard) | 1947, 1949 |
| George F. D. Duff (Toronto) | 1948 |
| Harry Gonshor (McGill) | 1948 |
| Leonard Geller (Brooklyn College) | 1948 |
| Robert L. Mills (Columbia) | 1948 |
| Donald J. Newman (City College of New York) | 1948, 1949, 1950 |
| Ariel Zemach (Harvard) | 1949 |
| David L. Yarmush (Harvard) | 1949 |
| J. W. Milnor (Princeton) | 1949, 1950 |
| John P. Mayberry (Toronto) | 1950 |
| Richard J. Semple (Toronto) | 1950 |
| Z. Alexander Melzak (University of British Columbia) | 1950 |
| Arthur P. Dempster (Toronto) | 1951 |
| Harold Widom (City College of New York) | 1951 |
| Herbert C. Kranzer (NYU) | 1951 |
| Peter John Redmond (Cooper Union) | 1951 |
| James B. Herreshoff IV (Cal Berkeley) | 1951, 1952, 1953 |
| Eugene R. Rodemich (Washington University, St. Louis) | 1952 |
| Gerhard Rayna (Harvard) | 1952 |
| Richard G. Swan (Princeton) | 1952 |
| Walter L. Bailey, Jr. (MIT) | 1952 |
| Marshall L. Freimer (Harvard) | 1953 |
| Norman Bauman (Harvard) | 1953 |
| Tai Tsun Wu (Minnesota) | 1953 |
| Samuel Jacob Klein (City College of New York) | 1953, 1959, 1960 |
| Benjamin Muckenhoupt (Harvard) | 1954 |
| James Daniel Bjorken (MIT) | 1954 |
| Leonard Evens (Cornell) | 1954 |
| William P. Hanf (Cal Berkeley) | 1954 |
| Kenneth G. Wilson (Harvard) | 1954, 1956 |
| Howard C. Rumsey, Jr. (Caltech) | 1955 |
| Jack Towber (Brooklyn College) | 1955 |
| David B. Mumford (Harvard) | 1955, 1956 |
| Trevor Barker (Kenyon College) | 1955, 1956 |
| Everett C. Dade (Harvard) | 1955, 1957 |
| Richard Michael Friedberg (Harvard) | 1956 |
| David M. Bloom (Columbia) | 1956, 1957 |
| J. Ian Richards (Minnesota) | 1957 |
| Richard T. Bumby (MIT) | 1957 |
| Rohit J. Parikh (Harvard) | 1957 |
| David R. Brillinger (Toronto) | Spring 1958 |
| Donald J. C. Bures (Queen's University) | Spring 1958 |
| Lawrence A. Shepp (Polytechnic Institute of Brooklyn) | Spring 1958 |
| Richard M. Dudley (Harvard) | Spring 1958 |
| Joseph Lipman (Toronto) | Spring 1958, Fall 1958 |
| Alan Gaisford Waterman (San Diego State College) | Fall 1958 |
| John Rex Forrester Hewett (Toronto) | Fall 1958 |
| Robert C. Hartshorne (Harvard) | Fall 1958 |
| Alfred W. Hales (Caltech) | Fall 1958, 1959 |
| Daniel G. Quillen (Harvard) | 1959 |
| Donald Passman (Polytechnic Institute of Brooklyn) | 1959 |
| Donald S. Gorman (Harvard) | 1959 |
| Martin Isaacs (Polytechnic Institute of Brooklyn) | 1959 |
| Stephen L. Adler (Harvard) | 1959 |
| Stephen Lichtenbaum (Harvard) | 1959 |
| Jon H. Folkman (Cal Berkeley) | 1960 |
| Louis Jaeckel (UCLA) | 1960 |
| Melvin Hochster (Harvard) | 1960 |
| William R. Emerson (Caltech) | 1960 |
| Barry Wolk (University of Manitoba) | 1961 |
| Elwyn R. Berlekamp (MIT) | 1961 |
| Edward Anton Bender (Caltech) | 1961, 1962 |
| John Hathaway Lindsey (Caltech) | 1961, 1962 |
| William C. Waterhouse (Harvard) | 1961, 1962 |
| John William Wood (Harvard) | 1962 |
| Robert S. Strichartz (Dartmouth) | 1962 |
| Joel H. Spencer (MIT) | 1963 |
| Lawrence A. Zalcman (Dartmouth) | 1963 |
| Lawrence J. Corwin (Harvard) | 1963 |
| Robert E. Greene (Michigan State) | 1963 |
| Stephen E. Crick, Jr. (Michigan State) | 1963 |
| Barry B. MacKichan (Harvard) | 1964 |
| Fred William Roush (North Carolina) | 1964 |
| Roger E. Howe (Harvard) | 1964 |
| Rufus Bowen (Cal Berkeley) | 1964 |
| Vern Sheridan Poythress (Caltech) | 1964 |
| Andreas R. Blass (University of Detroit) | 1965 |
| Barry Simon (Harvard) | 1965 |
| Daniel Fendel (Harvard) | 1965 |
| Lon M. Rosen (Toronto) | 1965 |
| Robert Bowen (Cal Berkeley) | 1965 |
| Marshall W. Buck (Harvard) | 1966 |
| Robert E. Maas (University of Santa Clara) | 1966 |
| Robert S. Winternitz (MIT) | 1966 |
| Theodore C. Chang (MIT) | 1966 |
| Richard C. Schroeppel (MIT) | 1966, 1967 |
| David R. Haynor (Harvard) | 1967 |
| Dennis A. Hejhal (Chicago) | 1967 |
| Don B. Zagier (MIT) | 1967 |
| Peter L. Montgomery (Cal Berkeley) | 1967 |
| Dean G. Huffman (Yale) | 1968 |
| Gerald S. Gras (MIT) | 1968 |
| Neal Koblitz (Harvard) | 1968 |
| Gerald A. Edgar (UCSB) | 1968, 1969 |
| Don Coppersmith (MIT) | 1968, 1969, 1970, 1971 |
| Alan R. Beale (Rice) | 1969 |
| Steven Winkler (MIT) | 1969 |
| Robert A. Oliver (Chicago) | 1969, 1970 |
| Jeffrey Lagarias (MIT) | 1970 |
| Jockum Aniansson (Yale) | 1970 |
| Steven K. Winkler (MIT) | 1970 |
| Arthur Rubin (Purdue, Caltech) | 1970, 1971, 1972 |
| Dale Peterson (Yale) | 1971 |
| David Shucker (Swarthmore) | 1971 |
| Robert Israel (Chicago) | 1971 |
| Michael Yoder (Caltech) | 1971, 1972 |
| Arthur Rothstein (Reed College) | 1972 |
| David Vogan (Chicago) | 1972 |
| Dean Hickerson (Cal Davis) | 1972 |
| Ira Gessel (Harvard) | 1972 |
| Angelos J. Tsirimokos (Princeton) | 1973 |
| Arthur L. Rubin (Caltech) | 1973 |
| Matthew L. Ginsberg (Wesleyan) | 1973 |
| Peter G. De Buda (Toronto) | 1973 |
| David J. Anick (MIT) | 1973, 1975 |
| Grant M. Roberts (Waterloo) | 1974 |
| James B. Saxe (Union) | 1974 |
| Karl C. Rubin (Princeton) | 1974 |
| Philip N. Strenski (Armstrong State) | 1974 |
| Thomas G. Goodwillie (Harvard) | 1974, 1975 |
| Ernest S. Davis (MIT) | 1975 |
| Franklin T. Adams (Chicago) | 1975 |
| Christopher L. Henley (Caltech) | 1975, 1976 |
| David J. Wright (Cornell) | 1976 |
| Nathaniel S. Kuhn (Harvard) | 1976 |
| Paul M. Herdig (Case Western Reserve) | 1976 |
| Philip I. Harrington (Washington University, St. Louis) | 1976 |
| Steven T. Tschantz (Cal Berkeley) | 1976, 1978 |
| Adam L. Stephanides (Chicago) | 1977 |
| Michael Roberts (MIT) | 1977 |
| Paul A. Vojta (Minnesota-Minneapolis) | 1977 |
| Stephen W. Modzelewski (Harvard) | 1977 |
| Russell D. Lyons (Case Western Reserve) | 1977, 1978 |
| Mark R. Kleiman (Princeton) | 1978 |
| Peter W. Shor (Caltech) | 1978 |
| Randall L. Dougherty (Cal Berkeley) | 1978, 1979, 1980 |
| Charles H. Walter (Princeton) | 1979 |
| Mark G. Pleszkoch (Virginia) | 1979 |
| Miller Puckette (MIT) | 1979 |
| Richard Mifflin (Rice University) | 1979 |
| Daniel J. Goldstein (Chicago) | 1980 |
| Laurence E. Penn (Harvard) | 1980 |
| Michael Raship (Harvard) | 1980 |
| Eric D. Carlson (Michigan State) | 1980, 1982, 1983 |
| Adam Stephanides (Chicago) | 1981 |
| Robin A. Pemantle (Cal Berkeley) | 1981 |
| Scott R. Fluhrer (Case Western Reserve) | 1981 |
| David W. Ash (Waterloo) | 1981, 1982, 1983 |
| Michael J. Larsen (Harvard) | 1981, 1983 |
| Brian R. Hunt (Maryland, College Park) | 1982 |
| Edward A. Shpiz (Washington University, St. Louis) | 1982 |
| Noam D. Elkies (Columbia) | 1982, 1983, 1984 |
| Gregg N. Patruno (Princeton) | 1983 |
| Benji N. Fisher (Harvard) | 1984 |
| Daniel W. Johnson (Rose-Hulman) | 1984 |
| Richard A. Stong (Washington University, St. Louis) | 1984 |
| Michael Reid (Harvard) | 1984, 1987 |
| Everett W. Howe (Caltech) | 1985 |
| Keith A. Ramsay (Chicago) | 1985 |
| Martin V. Hildebrand (Williams) | 1985 |
| Douglas S. Jungreis (Harvard) | 1985, 1986 |
| Bjorn M. Poonen (Harvard) | 1985, 1986, 1987, 1988 |
| David J. Zuckerman (Harvard) | 1986 |
| Waldemar P. Horwat (MIT) | 1986 |
| David J. Grabiner (Princeton) | 1986, 1987, 1988 |
| David J. Moews (Harvard) | 1986, 1987, 1988 |
| Constantin S. Teleman (Harvard) | 1987 |
| John S. Tillinghast (Cal Davis) | 1987 |
| Jeremy A. Kahn (Harvard) | 1988 |
| Ravi D. Vakil (Toronto) | 1988, 1989, 1990, 1991 |
| Andrew H. Kresch (Yale) | 1989 |
| Christo Athanasiadis (MIT) | 1989 |
| Colin M. Springer (Waterloo) | 1989 |
| Sihao Wu (Yale) | 1989 |
| William P. Cross (Caltech) | 1989 |
| Jordan Lampe (Cal Berkeley) | 1990 |
| Raymond M. Sidney (Harvard) | 1990 |
| Eric K. Wepsic (Harvard) | 1990, 1991 |
| Jordan S. Ellenberg (Harvard) | 1990, 1992 |
| Joshua B. Fischman (Princeton) | 1991 |
| Xi Chen (Missouri-Rolla) | 1991 |
| Samuel A. Kutin (Harvard) | 1991, 1992 |
| Jeffrey M. Vanderkam (Duke) | 1992 |
| Serban M. Nacu (Harvard) | 1992 |
| Adam M. Logan (Princeton) | 1992, 1993 |
| Craig B. Gentry (Duke) | 1993 |
| Wei-Hwa Huang (Caltech) | 1993 |
| J. P. Grossman (Toronto) | 1993, 1994, 1995 |
| Kiran S. Kedlaya (Harvard) | 1993, 1994, 1995 |
| Lenhard L. Ng (Harvard) | 1993, 1994, 1995 |
| William R. Mann (Princeton) | 1994 |
| Jeremy L. Bem (Cornell) | 1994, 1996 |
| Sergey V. Levin (Harvard) | 1995 |
| Yevgeniy Dodis (NYU) | 1995 |
| Dragos N. Oprea (Harvard) | 1996 |
| Ioana Dumitriu (NYU) | 1996 |
| Robert D. Kleinberg (Cornell) | 1996 |
| Stephen S. Wang (Harvard) | 1996 |
| Daniel K. Schepler (Washington University, St. Louis) | 1996, 1997 |
| Ovidiu Savin (University of Pittsburgh) | 1997 |
| Patrick K. Corn (Harvard) | 1997 |
| Samuel Grushevsky (Harvard) | 1997 |
| Mike L. Develin (Harvard) | 1997, 1998 |
| Ciprian Manolescu (Harvard) | 1997, 1998, 2000 |
| Ari M. Turner (Princeton) | 1998 |
| Nathan G. Curtis (Duke) | 1998 |
| Kevin D. Lacker (Duke) | 1998, 2001 |
| Christopher C. Mihelich (Harvard) | 1999 |
| Colin A. Percival (Simon Fraser) | 1999 |
| Davesh Maulik (Harvard) | 1999 |
| Derek I.E. Kisman (Waterloo) | 1999 |
| Sabin Cautis (Waterloo) | 1999 |
| Abhinav Kumar (MIT) | 1999, 2000 |
| Pavlo Pylyavskyy (MIT) | 2000 |
| Gabriel D. Carroll (Cal Berkeley, Harvard) | 2000, 2001, 2002, 2003 |
| Alexander B. Schwartz (Harvard) | 2000, 2002 |
| George Lee, Jr. (Harvard) | 2001 |
| Jan K. Siwanowicz (City University of New York) | 2001 |
| Reid W. Barton (MIT) | 2001, 2002, 2003 |
| Deniss Cebikins (MIT) | 2002 |
| Melanie E. Wood (Duke) | 2002 |
| Ana Caraiani (Princeton) | 2003 |
| Daniel M. Kane (MIT) | 2003 |
| Ralph C. Furmaniak (Waterloo) | 2003 |
Since 1992, the top scoring female has been awarded the Elizabeth Lowell Putnam Award.