The winning ticket holder has not yet come forward to claim the life-changing sum.
The winning numbers were 5, 29, 33, 39, 42, with Lucky Stars 3 and 9.
The National Lottery has announced upcoming jackpots, including a £14 million prize next Tuesday and a special £105 million EuroMillions draw next Friday.
Winners have 180 days to claim their prize, with unclaimed funds supporting the National Lottery Good Causes; retail tickets are more prone to going unclaimed than online ones.