59

This number is a prime.

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+ 2^59*(59!)-1 is the largest "almost evenian prime" less than a googol. ("An almost evenian number" is a number that can be represented as the product of first n positive even numbers minus 1 and is given by the form 2^n*n!-1, where n is the number of even numbers), (see PC97). [Loungrides]

(There is one curio for this number that has not yet been approved by an editor.)

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