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An invertible composite with invertible numbers as prime factors: 11, 101, 619, 686989 and 1881881. Note that this number is also the product of 3 invertible numbers: 6809, 686989 and 190069981. [Blanchette]

 

  Submitted: 2002-01-14 21:22:59;   Last Modified: 2008-01-30 11:28:00.



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