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M22

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M22
Prime class :
Type : Mersenne prime
Formula : Mn = 2n - 1
Prime data :
Rank : 22
n-value : 9,941
Number : 346088282490...883789463551
Digits : 2,993
Perfect number : 29,940 • (29,941-1)
Digits : 5,985
Discovery data :
Date of Discovery : 1963-05-16
Discoverer : Donald B. Gillies
Found with : Lucas-Lehmer test / ILLIAC II