The previous record Mega Millions jackpot of $656 million on March 30, 2012, was shared by winners in Illinois, Kansas and Maryland, while a $648 million jackpot was won in California and Georgia on December 17, 2013.
The winning ticket, which had the correct combination for the $1.586 billion jackpot, was sold at KC Mart in Simpsonville, South Carolina, where stores receive 1 percent of the value of a winning ticket for any prize over $10,000.
Whoever has the winning ticket for the $1.5 billion Mega Millions jackpot still has not come forward, SC lottery officials say.
The victor has 180 days to claim their prize and they may stay anonymous if they choose to do so.
He said he planned to distribute some of the $50,000 winnings he got for selling the ticket to his staff.
The winning ticket was purchased at KC Mart #7 in Simpsonville, South Carolina - the game's first jackpot victor from the state - on October 23, according to lottery officials via ABC News.More news: Wayne Rooney ready to enjoy farewell after pressure of 'Golden Generation'
If no one has come forward then each participating state in the Mega Millions game gets back all the money that their state contributed. The winner's time runs out on April 21.
The South Carolina Education Lottery advises the victor to place the ticket in a safe location and speak with a trusted financial adviser.
"Everyone's talking about it", he said.
After the monumental win, the lottery urged the potential victor to sign the ticket, drop it in a safe and get financial advice from a planner or lawyer.
One Twitter user had a suggestion about what to do with the money in the event the victor never steps forward: "Why doesn't the gov't just pick 25k lotto winners 1.5B/26K=$60K each and save itself the hassle?"
There were several other big winners who fell one number short of the jackpot as well.