SA's $2m lotto winner still a mystery

A South Australian winner of a $2 million prize in last weekend's X Lotto draw is still to come forward.

SA Lotteries says the first division ticket was purchased in Whyalla but wasn't registered so officials have no way of contacting the winner.

"Why delay discovering the news that you can start living your life as a multi-millionaire?" spokeswoman Claire Taylor says.

"So check those tickets and see if it could be you."

SA Lotteries is also still waiting to hear from the winner of $240,000 prize in August from a ticket bought at Ingle Farm in Adelaide.