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M19

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M19
Prime class :
Type : Mersenne prime
Formula : Mn = 2n - 1
Prime data :
Rank : 19
n-value : 4,253
Number : 190797007524...815350484991
Digits : 1,281
Perfect number : 24,252 • (24,253-1)
Digits : 2,561
Discovery data :
Date of Discovery : 1961-11-03
Discoverer : Alexander Hurwitz
Found with : Lucas-Lehmer test / IBM 7090
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