This number is a probable-prime (likely to be a prime but we have not (re-)proven it on this site).
Single Curio View: (Seek other curios for this number)As of 2018, the largest known titanic prime of the form Sigma(Fermat prime^n) = 257^486. Certified prime by Primo. [Sariyar]
Submitted: 2018-05-30 04:31:46; Last Modified: 2020-06-28 10:42:47.
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