| Mn | Details | ||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Fermat F13 | Composite: 4 known prime factors Trial Factored to 268 TF target 244 | ||||||||||||||||||||||||||||||
| Factored |
| ||||||||||||||||||||||||||||||
| ECM |
Estimated T-Level: 61.5 ⓘ TF below 2^199 is very unlikely to find new factors due to ECM effort. | ||||||||||||||||||||||||||||||
| History |
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996
GIMPS
Finding World Record Primes Since 1996