Mersenne number

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Small, white rat (genus Rattus) on a glass table. (rodent, laboratory, experiment)

Cruel and Unusual Punishments: 15 Types of Torture

July, 2006, Launch of Space Shuttle Discovery STS-121. See attached for full caption information.

Will Light-Speed Space Travel Ever Be Possible?

Marriage. A couple getting married during a church wedding ceremony. (religion, ceremony, bride, groom)

The Seven Sacraments of the Roman Catholic church

Titanic infographic. The 30th anniversary of its discovery is September 1, 2015. SPOTLIGHT VERSION.

Timeline of the Titanic’s Final Hours

Easter Procession of Maria Santisima del Sacromonte in Granada, Spain. This statue is known as Virgen de los Gitanos or The Virgin of the Gypsies.

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illustration of the walking titanosaurus, Patagotitan mayorum

Titanosaurs: 8 of the World's Biggest Dinosaurs

Rural Irish landscape, Sligo, Ireland.

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Mersenne number

mathematics

Learn about this topic in these articles:

major reference

In number game: Perfect numbers and Mersenne numbers
Most numbers are either “abundant” or “deficient.” In an abundant number, the sum of its proper divisors (i.e., including 1 but excluding the number itself) is greater than the number; in a deficient number, the sum of its proper divisors is less than…
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Mersenne primes

In Mersenne prime
…are a subset of the Mersenne numbers, M_n. The numbers are named for the French theologian and mathematician Marin Mersenne, who asserted in the preface of Cogitata Physica-Mathematica (1644) that, for n ≤ 257, M_n is a prime number only for 2, 3, 5, 7, 13, 17, 19, 31, 67,…
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research by Mersenne

In Marin Mersenne
…are now known as “Mersenne numbers,” his wider significance stems from his role as correspondent, publicizing and disseminating the work of some of the greatest thinkers of his age.
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