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Prime magic (Posted on 2018-09-29) Difficulty: 2 of 5
What is the smallest possible constant of a 3×3 magic square containing nine distinct non-composite numbers only?

No Solution Yet Submitted by Ady TZIDON    
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No Subject Comment 4 of 4 |
I think this problem relies a bit on the definition of a magic square and the word "small".
  Posted by Sylvia Love on 2019-01-29 01:06:14
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