1729

This number is a composite.

Single Curio View:   (Seek other curios for this number)
The largest number which is divisible by its prime sum of digits (19) and reversal (91) happens to be Ramanujan's famous taxi-cab number (1729 = 123 + 13 = 103 + 93). It is the smallest number expressible as the sum of two positive cubes in two different ways.

Submitted: 1999-09-02 18:40:00;   Last Modified: 2008-01-30 11:28:00.
Printed from the PrimePages <primes.utm.edu> © G. L. Honaker and Chris K. Caldwell