Nearly a month after the winning numbers were chosen, the second-largest Mega Millions prize in history remained unclaimed.
Illinois Lottery officials on Thursday asked individuals having tickets for the July 29 drawing to verify their numbers.
he winning ticket was purchased at a Speedway petrol station and convenience shop in Des Plaines, Illinois, a western suburb of Chicago.
Good for a total of $1.337 billion paid out over 30 years or a lump amount of about $780 million.
You have up to a year from the date of the drawing to claim your prize.
"The Illinois Lottery will help the winner through the prize claim process to guarantee a fantastic winning experience and accommodate any requests for anonymity,".