The Powerball jackpot rose to $643 million for the Wednesday, Aug. 20, drawing after no one won the top prize on Monday, Aug. 18.

After there was no winner in Monday night's drawing, Powerball's jackpot climbed to an estimated $643 million ahead of Wednesday's drawing.

The Powerball jackpot has grown to $643 million -- with a cash payout of $290.6 million -- after no one won Monday night's drawing. A total that was already the highest of the year has now crept higher. The next drawing will take place Wednesday night.