Lottery officials say nobody won the Powerball jackpot over the weekend and the top prize will now increase to about $425 million for the next drawing, the largest jackpot ever for the game.
Saturday's drawing was estimated at $325 million before the numbers were picked. That was the fourth-largest jackpot in the game's history.
Iowa Lottery spokeswoman Mary Neubauer said the jackpot for Wednesday's drawing could go even higher than the estimated $425 million because sales pick up in the days before record drawings.
The previous top Powerball prize was $365 million, won in 2006 by ConAgra Foods Workers in Lincoln, Neb.
The U.S. record for any lottery jackpot was set in April, when the Mega Millions drawing paid out $656 million on three winning ticket holders from Illinois, Maryland and Kansas.