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Cubic Equation (Posted on 2013-06-09) Difficulty: 4 of 5
Determine all triplets (a,b,c) of nonzero integers satisfying:
987654321*a + 123456789*b + c = (a + b + c)3

Prove that there are no others.

No Solution Yet Submitted by K Sengupta    
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re(2): an open letter to Charlie | Comment 11 of 13 |
(In reply to re: an open letter to Charlie by Charlie)

The new program, eliminating the multiplications and replacing with additions, didn't really run any faster, also taking somewhere between 24 and 30 hours to complete.
  Posted by Charlie on 2013-06-12 15:29:31

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