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                                  958619577 8359471439 3831931415 1899378973
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Omit the rightmost digit from this prime and the remaining number is the largest right-truncatable semiprime. [Gupta and Honaker]

 

  Submitted: 2008-01-13 14:07:17;   Last Modified: 2009-03-03 13:29:51.



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