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+ The digits of 4561 (abcd) produce a distinct nine-digit product in the following expression: (a+b+c+d)(ab+cd)(a+bcd)(abc+d). [Meller]

+ Oprah Winfrey's show, highest-rated talk show in the history of American television, ended on 25 May 2011 after 25 years and 4561 episodes. [Post]

(There is one curio for this number that has not yet been approved by an editor.)




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