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Pandigital Prime Sets

 Published on Friday, 24th March 2006, 06:00 pm; Solved by 8187;
Difficulty: Level 14 [36%]

Problem 118

Using all of the digits $1$ through $9$ and concatenating them freely to form decimal integers, different sets can be formed. Interestingly with the set $\{2,5,47,89,631\}$, all of the elements belonging to it are prime.

How many distinct sets containing each of the digits one through nine exactly once contain only prime elements?



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