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Forty-five Product (Posted on 2013-10-28) Difficulty: 3 of 5
Find all possible values of a five-digit base ten positive integer N such that N is equal to 45 times the product of its digits.

Prove that there are no others.

Extra Challenge: A non computer program aided solution.

See The Solution Submitted by K Sengupta    
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  Subject Author Date
SolutionSolution a slightly different wayPaul2013-10-28 15:14:24
SolutionSolutionJer2013-10-28 15:05:15
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