180689

This number is a composite.

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The smallest invertible prime containing all of the invertible digits that represents the hypotenuse of a Pythagorean triangle {6800,180561,180689}. Curiously, it represents the hypotenuse of three more Pythagorean triples: {35780, 177111, 180689}; {42420, 175639, 180689}; {76360, 163761, 180689}. [Bajpai]

Submitted: 2018-11-26 18:18:38;   Last Modified: 2020-06-15 16:14:29.
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