Euro mega jackpot won in Ireland
The five winning numbers on the main panel were 04, 08, 22, 23, 48, plus the two lucky stars 01 and 12.
The National Lottery is appealing for everyone to check their tickets.
A spokesperson said: "At this stage we don't know if it's a single winner or a syndicate."
She added: "We advise anybody who has this ticket to keep it safe until they can get into the National Lottery office next week to make their claim. This is a valuable piece of paper."
It is third EuroMillions jackpot won in Ireland this year and the 12th since EuroMillions began in 2004.
A Dublin work syndicate claimed a 88.5 million EuroMillions jackpot in January, while a west of Ireland syndicate scooped almost 29 million in July.