The Powerball jackpot, already the largest lottery prize in U.S. history, is now at $900 million.
No one selected all the numbers in Wednesday night's drawing, when the jackpot was $500 million. The next drawing is at 10:59 p.m. ET Saturday.
Lottery officials said on Saturday that if no one wins in the current drawing, the next pool of cash would be worth $1.3 billion on Wednesday.
Powerball jackpots start at $40 million and grow until the big prize is won. The current jackpot has been on since Nov. 7, after 18 drawings without a big winner. The odds of matching all the numbers is 1 in 292.2 million.