1661

This number is a composite.

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prime(1*6*6*1)*π(1*6*6*1) = 1661. It is the largest known (up to 10^7) with this property. [Firoozbakht]

Submitted: 2009-04-22 11:12:09;   Last Modified: 2009-04-22 19:26:32.
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