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                          900100 0021200032 0011004832 3779319397 8070200007
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A center-deletable prime. In other words, delete the center two digits and this new number is also prime. Repeat this process until only two digits remain. [Patterson]

 

  Submitted: 2003-09-16 11:58:31;   Last Modified: 2008-01-30 11:28:00.



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