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# 171727482881

This number is a prime.

17 1727482881

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The largest known elite prime. A prime number *p*is called "elite" if only a finite number of Fermat numbers are squares modulo

*p*(i.e., are quadratic residues of

*p*). [Post]

Submitted: 2006-08-27 01:24:20; Last Modified: 2009-02-15 20:17:48.

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