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M21
M21 | |
---|---|
Prime class : | |
Type : | Mersenne prime |
Formula : | Mn = 2n - 1 |
Prime data : | |
Rank : | 21 |
n-value : | 9,689 |
Number : | 478220278805...826225754111 |
Digits : | 2,917 |
Perfect number : | 29,688 • (29,689-1) |
Digits : | 5,834 |
Discovery data : | |
Date of Discovery : | 1963-05-11 |
Discoverer : | Gillies |