59

This number is a prime.

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Smallest number to be both an irregular prime (2nd) and safe prime (6th). Yet it is the largest number to be both a supersingular prime (5+9th) and a Pillai prime (3rd). [Post]

Submitted: 2010-01-23 12:16:41;   Last Modified: 2010-01-23 12:27:12.
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