# Great Ramanujam found 1729 as a magic number, what was the magic about it?

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1729 is also known as hardy-ramanujan number. While they were going in a taxi, Mr. Hardy told Ramnujan that what a boring number is this(referring to the taxi number 1729) then Ramanujan told him how interesting is this number!

Now the question is what was so interesting in it.

posted Mar 29, 2015
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## 1 Answer

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It is the smallest number expressible as the sum of two cubes in two different ways.
The two different ways are:
1729 = 13 + 123 = 93 + 103

answer Aug 2

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