131

This number is a prime.

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The smallest palindromic prime using two distinct digits which when interchanged forms another palindromic prime (313). Note that in both cases a new palindromic prime with a prime number of digits is generated when each digit d is repeated d times: 13331; 3331333. [Beedassy]

Submitted: 2009-03-07 00:16:31;   Last Modified: 2009-03-07 18:46:23.
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