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M7
| M7 | |
|---|---|
| Prime class : | |
| Type : | Mersenne prime |
| Formula : | Mn = 2n - 1 |
| Prime data : | |
| Rank : | 7 |
| n-value : | 19 |
| Number : | 524287 |
| Digits : | 6 |
| Perfect number : | 218 • (219-1) |
| Digits : | 12 |
| Discovery data : | |
| Date of Discovery : | 1588 |
| Discoverer : | Cataldi |
