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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)The largest invertible Apocalypse prime p. Curiously, p is also expressible as the sum of two squares. [Bajpai]
Submitted: 2018-12-23 18:18:15; Last Modified: 2018-12-23 18:31:28.
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