More than $10 million in lottery prizes has gone unclaimed in the past year.

Two prizes of more than half a million are part of the total, both of them first division winning tickets sold in Christchurch.

Second division prizes as high as $75,000 have also been left untouched.

People have 12 months from the date of the draw to make their claim.

Over $540 million has been paid out in prizes this year from ticket sales of almost $950 million.

- Newstalk ZB