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Terminating in seven sevens (Posted on 2009-06-26) Difficulty: 2 of 5
Determine the minimum value of a positive base ten integer N, such that each of the last seven digits of N3 is 7 but the eighth digit from the right in N3 is not 7.

See The Solution Submitted by K Sengupta    
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  Subject Author Date
re: computer solutionJer2009-06-26 20:32:47
Solutioncomputer solutionCharlie2009-06-26 13:54:27
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