There was one winner of tonight's Lotto jackpot, worth €12,740,043.
The winning numbers were 4, 14, 20, 23, 27, 37 and the bonus was 39.
The National Lottery said it was the biggest Lotto jackpot win in almost four years.
The top prize has been rolling over since Saturday 30 January.
It is not yet known where the winning ticket was sold.
Since the Lotto game was launched in 1988, only 26 jackpots over €10 million have been won.
Two other ticket holders matched five numbers and the bonus, picking up €208,132 each.
There was also one winner of the €250,000 Lotto Plus 2 prize, with that winning ticket sold in Co Laois.
The winning numbers in Lotto Plus 2 were 5, 11, 15, 23, 27, 38 with the bonus 35.