The Numbers, an eerie tale of life on a remote Scottish island, has added 15,000 to Clare Wigfall's bank balance after winning the world's most lucrative prize for a single short story, the BBC National Short Story award.Jane Gardam was named as runnerup for The People on Privilege Hill, earning her 3,000. The three remaining authors on the shortlist - Richard Beard, Erin Soros and Adam Thorpe - will all receive 500.Announcing the winners, chair of the judging panel, broadcaster and writer Martha Kearney, said: It's exciting that a relatively unknown voice, in fact the youngest writer on our shortlist, has distinguished herself amongst some very well known authors as a leading talent in the world of storytelling."