3949984

This number is a composite.

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3949984 = prime(3*9*4*9*9*8*4) - prime(3+9+4+9+9+8+4). Note that 3949984 is the earliest number with this property. [Firoozbakht]

Submitted: 2004-09-11 12:30:56; Last Modified: 2008-01-30 17:28:00.