梅森素数 méisēnsùshù Mersenne prime Origin Definitions Defs Strokes Stroke Words Sentences Sents 梅森 méisēn Mersenne Marin Mersenne (1588-1648), a French mathematician, philosopher, and music theorist.素数 素數 sùshù prime number A positive integer greater than 1 that has no positive divisors other than 1 and itself