This number is a composite.
Single Curio View: (Seek other curios for this number)77^77*78^78-1 is the only non-titanic prime of form a^a*b^b-1, where a, b are successive numbers that are both composite. [Loungrides]
Submitted: 2016-09-22 09:02:03; Last Modified: 2018-04-23 10:48:56.
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