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156492467 is the smallest 9-digit left-truncatable prime such that when three of its digits are interchanged, the resulting number is also a left-truncatable prime. I.e., 195462467 is also a left-truncatable prime. [Opao]

 

  Submitted: 2003-11-18 01:47:12;   Last Modified: 2008-01-30 11:28:00.



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