Mavis Wanczyk, 53, bought the ticket at a Chicopee, Massachusetts, petrol station.
Reporters asked if she had plans to treat herself to something nice, such as a fancy new auto. "I was thinking about other things like my mother and buy her a house and try to get a better life for my family", Mendez said.
"I'm going to go hide in my bed!" she added when asked how she planned to celebrate, wearing black-framed spectacles, a zip-up hooded black sweater over a grey lace top, necklace and shoulder-length thick auburn hair. Most of the money will go into operating expenses for the Lottery, but 20% of that will go the 351 cities and towns of the state as local aid.
Powerball is played in 44 states, the District of Columbia, Puerto Rico and the U.S. Virgin Islands.
Nine other tickets matched four of the five white balls and the Powerball and won $50,000.
Wanczyk came forward as the victor, she said, so that she could "get it over and done with", and then hopefully be left alone.
Wanczyk will have the option of receiving an immediate lump sum of more than $400 million, or receive the money over a course of 29 years. A $1 million winning ticket sold in at the Pit Stop on Dutch Lake Drive in Howard Lake. "And I have that - I have that!'" she told reporters.
Tickets worth $1 million were also sold in MA - one at Handy Variety in Watertown and the other at Sandy's Variety in Dorchester.
"Nobody has come in and claimed it, but we just opened our doors at 8:30 [Thursday morning]", he said.
The lottery said the ticket was bought from a convenience store in Chicopee, about 100 miles (160 kilometers) west of Boston.
The station gets a $5,000 bonus for selling the $1 million victor, a lottery spokesman said.
The odds of taking home the big prize were 1 in almost 300 million, according to Powerball officials. It no doubt raised some eyebrows with the press and viewers - but when you've just won over $700 million (before Uncle Sam takes his hefty cut), who cares what anybody thinks?