08/02/2011 12:22 pm ET Updated Oct 02, 2011

Colorado Lottery Jackpot Winner May Not Know It Yet

Someone in Colorado had a great day Saturday, but apparently doesn't know it yet.

The Colorado Lottery reports that a winning ticket to the $4.2 million jackpot was sold Saturday at the King Soopers on S. Sheridan St. in Denver, but no one has stepped forward to claim the prize.

The winning numbers are 10-11-24-27-28-33 and the prize (should the winner decide to take it a lump sum) is worth $2,115,118. Whoever won has until January 30, 2012 to contact authorities.

The likelihood of winning the Lotto jackpot is 1 in 5.25 million. Over 390 people have lucked into millions since Lotto started in 1989.

Colorado has received more than $2.2 billion from Lottery games in the state since 1983. Proceeds from the game benefit Great Outdoors Colorado, the Conservation Trust Fund, and Colorado State Parks.