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Eight Embodiment (Posted on 2014-05-25) Difficulty: 3 of 5
Determine the respective minimum values of a positive integer N for each p = 1 to 9 inclusively, such that:
  • N is composite, and:
  • All positive divisors of N (including itself but, with the exclusion of 1) contain the digit p.

No Solution Yet Submitted by K Sengupta    
Rating: 4.0000 (2 votes)

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Double digits Comment 6 of 6 |
p = 10:  101 * 101 = 10201
p = 11:  211 * 811 = 171121 (might not be a minimum)
p = 12:  127 * 127 = 16129

  Posted by Steve Herman on 2014-05-25 20:29:51
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