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M28
| 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 |
