In total, only 49 Mersenne primes are known.

目前总共只有49个已知的梅森质数。

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The university's computers had previously turned up three other Mersenne primes, most recently in 2013.

2013年，该大学的电脑曾经计算出另外三个梅森质数。

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When researching and looking for the perfect numbers, man found the conclusion about correspondence between the even perfect numbers and the Mersenne primes.

人类在研究与寻找完全数时得到结论：偶完全数与梅森素数是一一对应关系。

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Mersenne primes are most relevant to number theory, but most participants join Gimps for the fun of having a role in real research - and the chance of finding a new Mersenne prime.

BBC: NEWS | Science/Nature | Largest Prime Number discovered