What is Ramanjuan number?

Answer 1

did you mean: Ramanujan Number?

Ramanujan number:
The smallest nontrivial taxicab number, i.e., the smallest number representable in two ways as a sum of two cubes.
It is given by :

1729=1^3+12^3=9^3+10^3

The number derives its name from the following story G. H. Hardy told about Ramanujan . "Once, in the taxi from London, Hardy noticed its number, 1729. He must have thought about it a little because he entered the room where Ramanujan lay in bed and, with scarcely a hello, blurted out his disappointment with it. It was, he declared, 'rather a dull number,' adding that he hoped that wasn't a bad omen. 'No, Hardy,' said Ramanujan, 'it is a very interesting number. It is the smallest number expressible as the sum of two [positive] cubes in two different ways"'

Answer 2

Number that which can be expressed of the form a^2+b^2=c^2+d^2, ie expressing a number as "sum of squares in two different ways" are called ramanujan numbers.
For eg, 1729=12^2+1^2=10^2+9^2.
It is a special class of diophantine numbers.

Answer 3

The Ramanujam Number is 1729.

Answer 4

a no. which can be represented as sum of 2 cubes:
eg: 1729 = 10^3 + 9^3 = 1000+ 729
= 12^3 + 1^3 = 1728 + 1

Answer 5

1729

Answer 6

1729

Answer 7

1729 is known as the Hardy-Ramanujan number, after a famous anecdote of the British mathematician G. H. Hardy regarding a hospital visit to the Indian mathematician Srinivasa Ramanujan.

Answer 8

1729=12^3+1^3=10^3+9^3

Answer 9

Ramanujam number is 1729

It is the smallest number expressible as the sum of two [positive] cubes in two different ways i.e, 1729= 1x1x1+12x12x12= 9x9x9+10x10x10

Answer 10

It is 1729.

See the link below for more details.

http://en.wikipedia.org/wiki/1729_(number)