511

This number is a composite.

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5-1-1 = 3, 5*1*1 = 5, (5/1)/1 = 5, & 5+1+1 = 7. Note the curious symmetry among the odd primes and unity. [Capelle]

Submitted: 2003-06-11 07:27:09;   Last Modified: 2008-01-30 11:28:00.
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