The tickets were sold in Florida and Maryland.
The winning numbers were 11, 19, 24, 33, 51 -- and the Mega Ball of 7.
In addition to the two jackpot winners, the March 18 draw included eight $1 million "Match 5" winners.
Florida lottery officials say their winning ticket was sold at a Sunoco convenience store in Merritt Island. Information about the Maryland ticket wasn't immediately available.
The jackpot is the sixth-largest lottery prize in U.S. history, with a lump-sum option of $224 million.
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