This number is a composite.

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Numbers consisting of 35 concatenated with an even number of 9's have factors (6*10^(n/2)-1 and (6*10^(n/2)+1). Thus 359(w) (w any numbers of 9's) can be prime only if w is odd.

Submitted: 2003-12-21 16:43:57;   Last Modified: 2008-01-30 11:28:00.
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