Along with Dempsey, the previous record of 63 yards was shared with Jason Elam, Sebastian Janikowski and David Akers.
Dempsey, who kicked for the Saints in 1969 and 1970, booted the 63-yard field goal on Nov. 8, 1970 as time expired to give the Saints a 19-17 win over the Detriot Lions at Tulane Stadium.
Dempsey was a Pro Bowl selection from the Saints in 1969. He was inducted into the Saints Hall of Fame in 1989.
Longest field goals in NFL history (via the Pro Football Hall of Fame)
Matt Prater, Denver Broncos vs Tennessee, December 8, 2013
Tom Dempsey, New Orleans vs. Detroit, Nov. 8, 1970
Jason Elam, Denver vs. Jacksonville, Oct. 25, 1998
Sebastian Janikowski, Oakland at Denver, Sept. 12, 2011
David Akers, San Francisco at Green Bay, Sept. 9, 2012