| 2276233 | Composite, with 2 known prime factors. Cofactor is composite. Trial Factored to 268 TF target 262 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 280 / 280 | | 30 | 250000 | 123 / 640 |
Estimated T-Level: 26.0 ⓘ TF below 2^81 is very unlikely to find new factors due to ECM effort. |
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Factored | PRP without proof (not generated) | 2017-10-11 | Oliver Kruse | 51ED1D92CF8E115E | 1 | 0 | 1 | 3 | | Factored | PRP without proof (not generated) | 2017-11-21 | storm5510 | 51ED1D92CF8E115E | 1 | 2089533 | 1 | 3 | | Verified | Certified Good | 2025-02-19 | feather | 6FBB9F135C86CD81 | 2 | 562524 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-02-19 | kkmrkkblmbrbk | CERT | Proof certified good | | 2025-02-19 | feather | C-PRP | M2276233/491170109207/200772325400096713606471 : 6FBB9F135C86CD81 Proof Certified Good
Proof Power: 7
| | 2025-02-19 | feather | F-ECM | Factor: 200772325400096713606471 / ECM curve 35, B1=84317, B2=46074930, Edwards Sigma=2846090993073064 | | 2017-11-21 | storm5510 | C-PRP | M2276233/491170109207 : 51ED1D92CF8E115E | | 2017-10-11 | Oliver Kruse | C-PRP | M2276233/491170109207 : 51ED1D92CF8E115E | | 2016-04-06 | alpertron | NF-PM1 | B1=500000, B2=15000000, E=12 |
|
