The New South Wales player won the Jackpot Prize of $6.04 million in Lucky Lotteries Mega Jackpot draw 1498.

The elated winner said the revelation he was now a multi-millionaire was the best news he'd ever received.

"You are kidding me!" he said

"Oh my god, what a fantastic day.

"I can't wait to tell my wife. I am going to go straight home from work now and tell her. She will need to sit down when I break this news.

"I can't believe this! This doesn't feel real. I can't believe I am a multi-millionaire."

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The overjoyed man said he wouldn't just be taking the rest of the week off work, but also the rest of his life, as he plans to retire as soon as possible.

The winning entry was purchased at Katoomba Newsagency.

Katoomba Newsagency owner Ray Cameron said the outlet had already begun celebrating.

"Isn't it exciting," he said.

"We have had quite a few wins, but this is our biggest."

Mr Cameron said they would be sharing the 'wonderful' news with their customers.

"It's not only great news for the outlet and our winner, but also the community," he said.

"We are so happy for our winner and we wish him all the best with his prize.

"We can't wait for our next big win."