| Mn | Status | Details | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Fermat F28 | Composite: 1 known prime factor | ||||||||||||||||
| Factored |
| ||||||||||||||||
| ECM |
Estimated T-Level: 26.1 ⓘ TF below 2^82 is very unlikely to find new factors due to ECM effort. | ||||||||||||||||
| Assigned |
| ||||||||||||||||
| History |
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996
GIMPS
Finding World Record Primes Since 1996