| Mn | Status | Details | |||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2257987 | Composite, with 2 known prime factors. Cofactor is composite. | ||||||||||||||||||||||||||||||||
| Factored |
| ||||||||||||||||||||||||||||||||
| ECM |
Estimated T-Level: 22.1 ⓘ TF below 2^68 is very unlikely to find new factors due to ECM effort. | ||||||||||||||||||||||||||||||||
| PRP Cofactor |
| ||||||||||||||||||||||||||||||||
| History |
| ||||||||||||||||||||||||||||||||
Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996
GIMPS
Finding World Record Primes Since 1996