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                           13931 3931393139 3139313931 3931393139 3139313931
3931393139 3139313931 3931393139 3139313931 3931393139 3139313931 3931393139
3139313931 3931393139 3139313931 3931393139 3139313931 3931393139 3139313931
+ A palindromic prime with all substrings of five consecutive digits forming primes as well. [Patterson]




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