431729
This number is a prime.
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431729 = prime((4*3*1*7*2*9)*(4+3+1+7+2+9)) - (4*3*1*7*2*9)
*(4+3+1+7+2+9)). Note that 431729 is the smallest prime with
this property. [Firoozbakht]
Submitted: 2004-09-05 16:56:45; Last Modified: 2008-01-30 17:28:00.
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