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Strobogrammatic to pandigital (Posted on 2017-08-26) Difficulty: 3 of 5
Find a strobogrammatic number whose square is a pandigital number containing 0-9.

No Solution Yet Submitted by Jer    
Rating: 5.0000 (1 votes)

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Hints/Tips An answer | Comment 1 of 4
When I saw this problem I immediately thought of the symmetrical product 111,111,111^2 = 12,345,678,987,654,321.  But that does not contain the digit 0.  Adding an extra 1 produces 1,111,111,111^2 = 1,234,567,900,987,654,321.  I would be surprised if this was the smallest answer.
  Posted by Brian Smith on 2017-08-26 09:01:52
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