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Named for Marin Mersenne (1588-1648), French mathematician and philosopher, best known for his discovery of prime numbers of the form 2ⁿ-1 and that n is then necessarily also prime. The number 8191 = 2¹³-1 is the fifth Mersenne prime. Mersenne correctly verified that the numbers are prime also for n = 17 , 19 and 31---and that they are not prime for n = 11 , 23 and 29. The largest prime Mersenne correctly established was for n = 127 . Name proposed by the discoverer, following a suggestion by B. G. Marsden, who wrote the citation.

Named for Marin Mersenne (1588–1648), French mathematician and philosopher, best known for his discovery of prime numbers of the form 2n − 1 and that n is then necessarily also prime. The number 8191 = 213 − 1 is the fifth Mersenne prime. Mersenne correctly verified that the numbers are prime also for n = 17, 19 and 31 — and that they are not prime for n = 11, 23 and 29. The largest prime Mersenne correctly established was for n = 127. (M 31612)

Name proposed by the discoverer, following a suggestion by B. G. Marsden, who wrote the citation.