42
This number is a composite.
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42 = (π(4)*π(2)) * (prime(4)*prime(2)). Note that 42 is
the only number less than 20000000 with this property. [Firoozbakht]
Submitted: 2004-08-13 16:09:56; Last Modified: 2008-01-30 17:28:00.
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