Winning tickets for the record Powerball jackpot worth more than $587 million were purchased in Arizona and Missouri.
Missouri Lottery official Susan Goedde confirmed to ABC News this morning that one of the winning tickets was purchased at a Trex Mart in Dearborn, Mo. The holder of the ticket has not come forward.
"If you buy Powerball tickets at this location, please find them and check them closely," said May Scheve Reardon, executive director of the Missouri Lottery in a statement. "If you find you're holding the winning ticket, be sure you sign the back and put it in a safe place until you can take it to a Missouri Lottery office. You will also want to get some legal and financial advice before you claim."
The winning Arizona ticket was purchased at a Four Sons Food Store in Fountain Hills, Ariz., and was part of a $10 Quick Pick ticket, officials announced this afternoon. Arizona lottery officials said they had no information on that state's winner or winners.
The winning numbers for the jackpot were 5, 23, 16, 22 and 29. The Powerball was 6.
The jackpot swelled to $587.5 million, according to Lottery official Sue Dooley. The two winners will split the jackpot each getting $293.75 million. The cash payout is $192.5 million each.
An additional 8,924,123 players won smaller prizes, according to Powerball's website.
"There were 58 winners of $1 million and there were eight winners of $2 million. So a total of $74 million," said Chuck Strutt, Director of the Multi-State Lottery Association.
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This is the 27th win for Missouri, ranking it second in the nation for lottery winners after Indiana, which has 38 wins. Arizona has had 10 Powerball jackpot wins in its history.
Players bought tickets at the rate of 131,000 every minute up until an hour before the deadline of 11 p.m. ET, according to lottery officials.
The jackpot had already rolled over 16 consecutive times without a winner. That fact, plus the doubling in price of a Powerball ticket, accounted for the unprecedented richness of the pot.
"Back in January, we moved Powerball from being a $1 game to $2," said Mary Neubauer, a spokeswoman at the game's headquarters in Iowa. "We thought at the time that this would mean bigger and faster-growing jackpots."
That proved true. The total, she said, began taking "huge jumps -- another $100 million since Saturday." It then jumped another $50 million.
The biggest Powerball pot on record until now -- $365 million -- was won in 2006 by eight Lincoln, Neb., co-workers. As the latest pot swelled, lottery officials said they began getting phone calls from all around the world.
"When it gets this big," said Neubauer, "we get inquiries from Canada and Europe from people wanting to know if they can buy a ticket. They ask if they can FedEx us the money."
The answer she has to give them, she said, is: "Sorry, no. You have to buy a ticket in a member state from a licensed retail location."
About 80 percent of players don't choose their own Powerball number, opting instead for a computer-generated one. Asked if there's anything a player can do to improve his or her odds of winning, Neubauer said there isn't -- apart from buying a ticket, of course.
Lottery officials put the odds of winning this Powerball pot at one in 175 million, meaning you'd have been 25 times more likely to win an Academy Award.
Skip Garibaldi, a professor of mathematics at Emory University in Atlanta, provided additional perspective: You are three times more likely to die from a falling coconut, he said; seven times more likely to die from fireworks, "and way more likely to die from flesh-eating bacteria" (115 fatalities a year) than you are to win the Powerball lottery.
Segueing, then, from death to life, Garibaldi noted that even the best physicians, equipped with the most up-to-date equipment, can't predict the timing of a child's birth with much accuracy.
"But let's suppose," he said, "that your doctor managed to predict the day, the hour, the minute and the second your baby would be born."
The doctor's uncanny prediction would be "at least 100 times" more likely than your winning.
Even though he knows the odds all too well, Garibaldi said he usually plays the lottery.
When it gets this big, I'll buy a couple of tickets," he said. "It's kind of exciting. You get this feeling of anticipation. You get to think about the fantasy."
So, did he buy two tickets this time?
"I couldn't," he told ABC News. "I'm in California" -- one of eight states that doesn't offer Powerball.
In case you were wondering, this Saturday's Powerball jackpot is starting at $40 million.
ABC News Radio contributed to this report.