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Single Curio View: (Seek other curios for this number) 717 is the largest threedigit palindrome such that if it is raised to the sum of its digits plus the sum of its digits plus one, the result is prime. I.e., 717^(7+1+7)+(7+1+7)+1 is prime. [Opao]
Submitted: 20031214 21:48:54; Last Modified: 20080130 11:28:00.
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