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The smallest "almost plus sign prime" of order 5. Note that its sum of digits is equal to its length. (An almost plus sign prime is a plus sign prime having a distinct central digit.
1 1 0 1 1
1 1 0 1 1
0 0 9 0 0
1 1 0 1 1
1 1 0 1 1 
[Loungrides]

 

  Submitted: 2009-08-22 07:02:55;   Last Modified: 2014-08-30 10:16:45.



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