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Primes square (Posted on 2014-02-07) Difficulty: 3 of 5
Create a 4x4 array of digits such that:

the 4 rows read from left to right are prime numbers with digits in non-increasing order;

the 4 columns read from top to bottom are prime numbers with digits in non-increasing order;

and the 8 primes are all different.

The solution is unique.

No Solution Yet Submitted by Jer    
Rating: 3.0000 (1 votes)

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  Subject Author Date
Computer approach (spoiler)Harry2014-02-09 16:21:00
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