An institution has offered a $1 million prize to anyone who can solve a famous math problem that has puzzled mathematicians for more than a century. The Riemann hypothesis, first proposed by German mathematician Bernhard Riemann in 1859, is considered to be one of the hardest and most important unsolved problems of pure mathematics — the study of thinking about maths, rather than applying it to the real world. The hypothesis is based on the Riemann zeta function, also attributed to Bernhard Riemann. It states: “The real part of every nontrivial zero of the Riemann zeta function is 1/2”. The...