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Here one 5x5 magic square 
Mars Magic Square
The magic costant is 65, the second number equal to the sum of 2 squares 1 + 82 and 42 + 72 and product of 5 and 13, two important numbers.
The sum of all the numbers of the square is 325, the smallest number sum of 2 squares in three different mode: 1 + 182, 62 + 172, 102 + 152.
The colours are: green for the numbers and red for the background.
The metal of Mars is iron.
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