The Melbourne winner of $40 million in yesterday's Powerball draw will continue to buy Tattslotto tickets just for fun.
The married man, aged in his 50s, was one of two winners in the $80 million first division prize, with the other winner coming from NSW.
Tattsall's Lotteries chief executive Bill Thornton said the man was lost for words when he took the call of a lifetime.
"We spoke to a very happy Victorian this morning," he said.
"He was completely shocked when we rang and the first thing he said was 'I better ring my wife and let her know.' "
The winner, who is a regular player online, will continue working.
"I think he is still in a state of shock having only heard the news this morning ... but there is no talk of retirement at this stage," Mr Thornton said.
"This particular player has said he will continue to buy tickets but just for fun."
The man, a professional from Melbourne's western suburbs, was too shocked to say how he would spend the windfall.
"It's something you think might happen but you never actually believe it will happen to you," he told Tattersalls.
"It still hasn't sunk in yet. We'll take our time to think about it and won't be rushing into anything.
"We'll help out the kids a bit."
Almost one third of Victorians had a ticket in Thursday's draw, while nationwide an estimated 5 million entries were sold, Mr Thornton said.
The winning numbers were 13, 17, 15, 21 and 45. The Powerball number was 37.
The total prize pool for the draw was more than $109 million.
Just weeks ago, an Adelaide man and a Queensland couple shared a $106 million prize from Oz Lotto.
The record for the biggest Australian lottery win by a single ticket is the $58.7 million Powerball prize won by a syndicate of four workmates from Melbourne's north in June last year.
There is $20 million up for grabs this Saturday.
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