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4 (another Prime Pages' Curiosity) |
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18 99 86 61
66 81 98 19
91 16 69 88
89 68 11 96
A 4-by-4 magic square displaying 4 primes. Note that the same occurs if rotated 180 degrees about the center of the square's plane.
Submitted: 1999-09-02 18:40:00; Last Modified: 2009-06-26 20:41:15.
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