The winner, who wished to remain anonymous, was drawn as Thursday's winner after he purchased tickets online.

A NSW Lotteries official called the winner on Thursday, and the man couldn't believe he'd claimed the jackpot.

"You are joking?" he said.

"Fair dinkum? Holy sh**! I'm feeling great - you can say that again. It's made my day.

"It's unbelievable. It's certainly a shock, I didn't think this was a phone call I'd be answering today."

The winner said he wasn't yet sure what he'd be doing with the money, but the 'stoked bloke' - who was called while at work - said he wouldn't be sticking around.

"I'm going to clock off from work early. I don't think I'll be able to concentrate, I'm too hyped up," he said.

"I don't know what I am going to do with [the money]," he explained.

"I might do some renovations and I'll think about getting a new car.

"We will probably go on a holiday too. I don't know where yet, but I am sure we will go on one.

"I think we will need to spend the night celebrating and planning what we are going to do with it."