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A palindromic number is the same forwards as backwards. In the case of a two-digit number, that means the two digits are the same: 11, 22, 33, 44, 55, 66, 77, 88, and 99. The only one that is prime is 11, since the others are all multiples of 11.

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โˆ™ 2014-07-20 00:17:33
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Q: What is the only 2-digit palindromic number that is prime?
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Related questions

What is the only two digit palindromic prime number?

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