China's 'Good Will Hunting?' Migrant worker solves complex math problem

Beijing (CNN) A Chinese migrant worker with no college degree has found a solution to a complex math problem -- in what appears to be a real life version of the Oscar-winning movie "Good Will Hunting."

Yu Jianchun, who works for a parcel delivery company, said he'd always had a passion for numbers and has created an alternative method to verify Carmichael numbers.
His solution amazed academics, who said his proof was much more efficient than the traditional one.
"It was a very imaginative solution," said Cai Tianxin, a math professor at Zhejiang University.
"He has never received any systematic training in number theory nor taken advanced math classes. All he has is an instinct and an extreme sensitivity to numbers."

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