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M28

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M28
Prime class :
Type : Mersenne prime
Formula : Mn = 2n - 1
Prime data :
Rank : 28
n-value : 86,243
Number : 536927995502...709433438207
Digits : 25,962
Perfect number : 286,242 • (286,243-1)
Digits : 51,924
Discovery data :
Date of Discovery : 1982-09-25
Discoverer : David Slowinski
Found with : Lucas-Lehmer test / Cray 1
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