Double Mersenne number

ID: double-mersenne-number

A Double Mersenne number is a special class of numbers that is defined using Mersenne numbers. Mersenne numbers are of the form \( M_n = 2^n - 1 \), where \( n \) is a positive integer. A Double Mersenne number is then defined as a Mersenne number whose index \( n \) itself is a Mersenne prime.

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