If somebody wins, it would be at least the 10th biggest jackpot in U.S. lottery history and sixth most significant Powerball prize.
Today to reveal the identity of the fortunate bearer of one of the three winning tickets sold for the Feb. 11 drawing.
Previously, players would spend $1 on a ticket and a different $1 for an "Xtra" chance to win a prize multiplied by 2X, 3X, 4X or 5X.
The Montana Lottery joined Mega Millions on March 1, 2010.