This number is a composite.
Single Curio View: (Seek other curios for this number)400 is the smallest number m such that |m^k -prime(m)| for k = 1,2,...,5 are primes. [Firoozbakht]
Submitted: 2004-07-08 11:03:53; Last Modified: 2008-01-30 11:28:00.
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