| 2273399 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 268 TF target 262 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 280 / 280 | | 30 | 250000 | 128 / 640 |
Estimated T-Level: 26.0 ⓘ TF below 2^81 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | | John Lloyd | 8D849FB93BB0633C | 0 | Windows,Prime95,v14,(aka WQ1) | | Factored | | Wayne Scott | 8D849FB93BB0633C | 0 | Linux 32-bit,Prime95,v14,(aka WQ2) | | Factored | 1999-05-09 | Jari Aakko | 8D849FB93BB0633C | 2022506 | Windows,Prime95,v18,(aka WU1) |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | PRP without proof (not generated) | 2017-10-11 | Oliver Kruse | ABF3352504001E6A | 1 | 0 | 1 | 3 | | Verified | PRP without proof (not generated) | 2017-11-21 | storm5510 | ABF3352504001E6A | 1 | 1128283 | 1 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2017-11-21 | storm5510 | C-PRP | M2273399/559242319807828847 : ABF3352504001E6A | | 2017-10-11 | Oliver Kruse | C-PRP | M2273399/559242319807828847 : ABF3352504001E6A | | 2016-04-30 | alpertron | NF-PM1 | B1=500000, B2=15000000, E=12 | | 2002-06-29 | -anonymous- | F | Factor: 559242319807828847 | | 1999-05-09 | -anonymous- | C-LL | 8D849FB93BB0633C |
|
