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M13

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M13
Prime class :
Type : Mersenne prime
Formula : Mn = 2n - 1
Prime data :
Rank : 13
n-value : 521
Number : 686479766013...291115057151
Digits : 157
Perfect number : 2520 • (2521-1)
Digits : 314
Discovery data :
Date of Discovery : 1952-01-30
Discoverer : Raphael M. Robinson
Found with : Lucas-Lehmer test / SWAC

M13 is the 13th known Mersenne prime 2521-1 found on 1952-01-30 by Raphael M. Robinson.

See also