Question

what is a hardy ramanujan number

Answer 1

Hardy Ramanujan numbers are the numbers which can be expressed as a sum of two cubes in two different ways.
Example, 1729=1728 + 1= 12cube + 1cube ; 1729=1000 + 729 = 10 cube +9cube..

Answer 2

hardy ramanujan number

★ Once a famous mathematician Prof. G H Hardy visited the great Indian mathematician Ramanujan in a taxi whose number was 1729.

★ He described the number as a dull number.

★ Ramanujan pointed out that 1729 was indeed an interesting number

● because it could be expressed as a sum of two cubes in two different ways:

⟹ 1729 = 1729 + 1 = 12³ + 1

⟹ 1729 = 1000 + 729 = 10³ + 9³

★ 1729 has since been known as Hardy-Ramanujan number.

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