For decades, a math puzzle has stumped the smartest mathematicians in the world. x 3 +y 3 +z 3 =k, with k being all the numbers from one to 100, is a Diophantine equation that's sometimes known as ...

Normally I would avoid math problems where scientists start off by saying: “The numbers involved are so enormous that if their digits were written out by hand they would stretch to the moon and back.” ...