| 4770517 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 273 TF target 265 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 144 / 280 |
Estimated T-Level: 22.6 ⓘ TF below 2^70 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | 1998-06-14 | Seth Chazanoff | 489379D8C73A27DE | 0 | Windows,Prime95,v16,(aka WS1) | | Factored | 2000-02-16 | Jeroen Heijmans | 489379D8C73A27DE | 3378668 | Windows,Prime95,v19,(aka WV1) |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | Certified Good | 2025-03-27 | fordobr | AB1337DBA3300F48 | 1 | 2036263 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-03-27 | ike | CERT | Proof certified good | | 2025-03-27 | fordobr | C-PRP | M4770517/270733987871189537754662446049 : AB1337DBA3300F48 Proof Certified Good
Proof Power: 7
| | 2025-03-27 | fordobr | F-ECM | Factor: 270733987871189537754662446049 / ECM curve 38, B1=60521, B2=88280115, Edwards Sigma=85180922571649 | | 2024-11-16 | TheJudger | NF | no factor TF: 72-73 | | 2024-11-16 | TheJudger | NF | no factor TF: 71-72 | | 2024-08-04 | Jason Lynch | NF-PM1 | B1=17039000, B2=280186927020 | | 2021-09-01 | LaurV | NF-PM1 | B1=8919937, B2=444974253 | | 2021-08-22 | SRBase | NF | no factor TF: 70-71 | | 2021-08-18 | SRBase | NF | no factor TF: 69-70 | | 2021-04-19 | TJAOI | NF | no factor TF: 68-69 | | 2018-09-24 | Yxinity | NF | no factor TF: 67-68 | | 2017-12-11 | Yxinity | NF | no factor TF: 66-67 | | 2016-02-23 | Mark Rose | NF | no factor TF: 62-63 | | 2015-07-15 | snme2pm1 | NF | no factor TF: 65-66 | | 2015-01-09 | VictordeHollander | NF | no factor TF: 64-65 | | 2015-01-09 | VictordeHollander | NF | no factor TF: 63-64 | | 2013-10-03 | Squeeky_Squirrel | NF-PM1 | B1=165000, B2=4166250, E=6 | | 2011-11-05 | GrunwalderGIMP | NF | no factor TF: 1-63 | | 2010-05-23 | markr | NF | no factor TF: 61-62 | | 2009-08-26 | Carsten Kossendey | NF-PM1 | B1=30000, B2=412500 | | 2000-02-16 | -anonymous- | C-LL | 489379D8C73A27DE | | 1998-06-14 | schaz | C-LL | 489379D8C73A27DE | | 1998-05-16 | -anonymous- | NF | no factor TF: 1-61 |
|
