484
This number is a composite.
Just showing those entries submitted by 'Firoozbakht': (Click here to show all)
sigma(484) = prime(4)*prime(8)*prime(4). 484 is the largest
known (up to 10^8) such number. [Firoozbakht]
π(484) = phi(484)-4*8*4. [Firoozbakht]
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