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# 25169

This number is a prime.

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The smallest prime formed by concatenating the squares (9,
16, 25) of a primitive Pythagorean triple in the reverse
order. Note the prime sum of digits and the fact that this
Pythagorean triple (*X, Y, Z*) is the only one that forms with its reversal a palindromic prime

*XYZYX*(34543) with also a prime sum of digits. [Beedassy]

Submitted: 2009-09-09 11:02:59; Last Modified: 2009-09-09 16:13:26.

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