Definition:Pervushin's Number
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Definition
Pervushin's number is the Mersenne number $M_{61} = 2^{61} - 1$.
Source of Name
This entry was named for Ivan Mikheevich Pervushin.
Historical Note
In $1883$, Ivan Mikheevich Pervushin proved that $M_{61}$ is a Mersenne prime.
As a result of his work, the number was named for him.