Srinivasa Ramanujan is the greatest mathematician to come from India. He was largely a self-taught mathematician. Hindered by poverty and ill-health, his original work has considerably enriched the fields of sciences such as number theory and, more recently, physics and he tragically died at the tender age of 33 (1887 -1920).
Although a math prodigy, he failed to get a college degree, as he did not clear his fine arts courses. However, he wrote to Professor G.H Hardy while working as an accounting clerk with the Madras Port Trust who accepted him at Cambridge in April 1914, seeing his prodigious talent for mathematics. In 1916, he got the equivalent of a Ph.D. and in 1918 he became the first Indian to be elected as a Fellow of the British Royal Society. In India, we celebrate National mathematics day on 22nd December in honor of his birthday.
It is now known as the Taxicab number. Here are some other examples of this kind of numbers