You don't have to do any research on when and who was President, I've gone back over a century of Presidents and listed them here and when they were President.
So...
26th. Theodore Roosevelt,
1901-1909
27th. William Howard Taft,
1909-1913
28th. Woodrow Wilson,
1913-1921
29th. Warren Gamaliel Harding,
1921-1923
30th. Calvin Coolidge,
1923-1929
31st. Herbert Clark Hoover,
1929-1933
32nd. Franklin D. Roosevelt,
1933-1945
33rd. Harry S. Truman,
1945-1953
34th. Dwight D. Eisenhower,
1953-1961
35th. John F. Kennedy,
1961-1963
36th. Lyndon B. Johnson,
1963-1969
37th. Richard Nixon,
1969-1974
38th. Gerald Ford,
1974-1977
39th. Jimmy Carter,
1977-1981
40th. Ronald Reagan,
1981-1989
41st. George H. W. Bush,
1989-1993
42nd. Bill Clinton,
1993-2001
43rd. George W. Bush,
2001-2009
--- Too Recent perhaps ---
44th. Barack Obama,
2009-2017
--- Definitely too recent ---
45th and current President. Donald J. Trump, 2017-
When I was born,
Jimmy Carter was the 39th President. 