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                           99999 9999888888 8877777776 6666655555 4444223133
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The greatest semiprime composed of one 1, two 2's, ..., nine 9's. That is, 999999999888888887777777666666555554444223133/3 = 333333333296296295925925888888851851481407711 is prime. [Poo Sung]

 

  Submitted: 2009-07-30 23:58:25;   Last Modified: 2009-07-31 21:03:54.



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