The suspense is over: An 84-year-old Florida woman has come forward to claim last month's $590 million Powerball jackpot, reports the Tampa Tribune. Gloria C. MacKenzie will take a lump-sum payout of $371 million before taxes, making her the biggest solo lottery winner in US history, reports AP. She is a resident of the small town of Zephyrhills, where the winning ticket was sold at a supermarket. Lottery officials say another customer let MacKenzie step ahead in line before she bought the winning ticket with a quick-pick, reports USA Today. MacKenzie left with family members after claiming the prize in Tallahassee and didn't speak to reporters.