Ramanujan’s taxicab number is 1729.

Wacky WorldNumbers & Maths

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

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The number 6174 is magical.Pi has been calculated to trillions of digits.Pingala described binary numbers over 2,000 years ago.