In addition to the two jackpot-winning tickets, there were 20 $1 million winners, and a huge number of tickets won smaller prizes, lottery officials said.
The jackpot was estimated at $636 million when the drawing was held, but could grow once sales figures are compiled.
The winning numbers are: 8, 14, 17, 20 and 39, with a Megaball of 7.
The jackpot was the second-largest lottery prize in U.S. history. Mega Millions will return to its starting jackpot of $15 million for Friday's drawing.
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