The Powerball drawing, set for Saturday at 10:59 p.m., has a jackpot of $314 million.
Numbers have been drawn for a lottery jackpot that would be the ninth-largest lottery in US history.
The Powerball jackpot, too, climbed after no one matched all six numbers Wednesday night, but three lucky winners matched the first five numbers for a cool $1 million.
The grand prize increased to the third-largest jackpot in the lottery's history, after no tickets matched all the numbers in the Tuesday drawing.
The prize would be the largest jackpot in more than nine months.
The $470 million prize came with a $265.3 million cash payout option, according to Mega Millions.
The largest jackpot in Mega Millions history was won in March 2012.
Four tickets matched five white balls in Tuesday's drawing.
Mega Millions is played in 44 states as well as Washington, D.C., and the U.S. Virgin Islands.
It's not yet known whether anyone had bought a winning ticket.
Saturday's jackpot has a cash option of $179.4 million. It would also be the fourth-largest winning jackpot in USA history, with two Powerball drawings outranking the highest Mega Millions totals.