The Riemann Hypothesis is one of the most famous problems in that set. It’s about prime numbers. That’s any whole number that can only be divided by 1 and itself – like 2, 3, 5, 7 and 11.
In 1919, the legendary British mathematician GH Hardy visited his ailing friend Srinivasa Ramanujan at a hospital in Putney, London. He arrived in a taxi bearing the number 1729, and joked that it ...
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