A single, lucky winner in Florida could be taking home the $800 million Mega Millions jackpot. According to Mega Millions, a single ticket sold in Bradenton matched all the numbers, claiming the 10th-largest jackpot in history and the biggest so far this year. The odds of winning the jackpot are 1 in 290,472,336, while the odds of winning any Mega Millions prize are 1 in 23. Mega Millions drawings are held every Tuesday and Friday in 45 U.S. states, Washington, D.C., and the U.S. Virgin Islands. However, if you live in Alabama, Alaska, Arkansas, Hawaii, Mississippi, Nevada, Utah, Wyoming or Puerto Rico, you cannot purchase Mega Millions tickets.