368

This number is a composite.

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3^3 - 6^6 + 8^8 is a prime with length π(π(π(368))). Note there is only one composite and one prime with this property. [Firoozbakht]

Submitted: 2004-11-11 11:23:20;   Last Modified: 2008-01-30 11:28:00.
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