The Ramanujan Number is 1729. So you ask what is special about this number? Well it is the smallest number that can be represented as the sum of two positive cubes in two different ways. read more
Well it is the smallest number that can be represented as the sum of two positive cubes in two different ways. read more
1729, called the Hardy-Ramanujan Number is the smallest number which can be expressed in terms of sum of two cubes, namely: 1729 = 1^3 + 12^3; 1729 = 10^3 + 9^3; What makes this even more interesting is its back-story: Once when Ramanujan was ill and on his bed in Putney, Mathematician GH Hardy came to visit him. read more
Best Answer: Of course it is unique. It is the *smallest* positive integer that can be written as the sum of two cubes in two different ways. 1729 = 10^3 + 9^3 = 12^3 + 1^3. read more