The Florida Lottery says the largest sole winner of a jackpot in US history has stepped forward to claim her prize.

84-year-old Mrs. Gloria C Mackenzie won over $590-million.

She bought the ticket when someone let her go in front of them in a queue.

Mrs. Mackenzie has elected to receive the winnings in a one-time lump sum payment, which works out at $370,896,780 - before taxes.

She didn't want to speak to the media, but she has released a statement to say she bought the winning ticket as a single quickpick ticket, but she had also bought 4 other tickets for the draw.

The Mackenzie's say they are grateful for the win, but want to maintain the family's privacy and they've directed all enquiries to their legal and financial representatives.