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Self-proclaimed 'slow-witted' migrant worker solves complex math problem

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A self-proclaimed "slow-witted" migrant worker with no college degree has apparently found a much more efficient solution to a complex math problem, according to CNN.

Yu Jianchun works for a delivery company and told CNN he's always had a passion for numbers.


Following that passion delivered serious results, leading Jianchun to create an alternative method to verifying Carmichael numbers.

Carmichael numbers play an important role in computer science, according to CNN.

"He has never received any systematic training in number theory nor taken advanced math classes," Cai Tianxin, a math professor at Zhejiang University, told CNN. "All he has is an instinct and an extreme sensitivity to numbers."

Jianchun worked on his proof during his free time last year and said he would pore over numbers while studying animal breeding at his vocational school.

"I'm slow-witted," Jianchun told CNN. "I need to spend far more time studying math problems than others. Although I am sensitive to numbers, I barely have any knowledge about calculus or geometry."

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