In addition to the grand prize, 36 tickets sold last night won the second prize of $1 million.
The single winning ticket in SC is officially worth $1.537 billion as an annuity or a lump sum cash prize of $877.8 million.
For the victor, options include an immediate cash payment of $877.8 million, or the $1.537 billion prize paid out over 29 years.
With a one-time cash option, the unidentified victor will walk away with a cool $913.7 million.
A group of hospital employees in Mount Pleasant won a $1 million prize in Tuesday night's Mega Millions drawing. That game itself now has a monster jackpot, though a small one relative to Mega Millions: Powerball stands at $US620 million ahead of Wednesday's drawing.
The Mega Millions jackpot will reset to its starting value of $40 million for Friday night's drawing.
If lottery officials in SC seem just a bit anxious, who could blame them?
If the SC victor is the only Mega Millions victor, then they will first face a federal tax and then a 7 percent state tax, as calculated and presented by USA Mega.
The jackpot fell just short of the all-time United States lottery record, set in January 2016 when three winning Powerball tickets split a $1.586 billion prize. That's worth an estimated $620 million.More news: LeBron hails Ball, Stephenson after Lakers win again
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Thirteen winners also matched four white balls plus the Mega Ball, which is a $10,000 prize.
The competition was created in 2002 and has seen a number of changes to the rules over the years that have reduced the odds of winning, leading to larger jackpots. Two winners, in Florida and Texas, added the Megaplier to their ticket, tripling their prizes to $3 million.
Yonkers Mayor Mike Spano, along with Stew Leonard, held a press conference Wednesday to announce the winning ticket. Wednesday's will be the third-largest Powerball jackpot. The winning ticket was purchased in SC.
Powerball officials made the first such move in October 2015, changing the odds of winning the jackpot from 1 in 175 million to 1 in 292.2 million.
"Our message to the $1.5 BILLION #Mega Millions jackpot victor: Sign the back of the ticket, place the ticket in a safe location, speak with a trusted advisor and CALL THE LOTTERY at 1-866-736-9819".
The odds of matching all six numbers and winning the top prize is 1 in 302.5 million. Mega Millions followed suit in October 2017, with odds worsening from 1 in 259 million to 1 in 302.5 million.
Mega Millions officials count on enormous jackpots to draw in players who would ordinarily avoid participating.
The Mega Millions is open for Brits to play too.
Josh Barro at New York Magazine recommended that any victor take the annuity for a number of reasons.