| 4649507 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 272 TF target 265 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 116 / 280 |
Estimated T-Level: 22.1 ⓘ TF below 2^68 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | 1998-09-13 | Andy Watt | AD863E1A46B76319 | 0 | Windows,Prime95,v16,(aka WS1) | | Factored | 1999-12-08 | Patrick Berchtold | AD863E1A46B76319 | 885648 | Windows,Prime95,v19,NT service,(aka WV5) |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | Certified Good | 2025-03-16 | fordobr | 6D44EB68A7208458 | 1 | 2196921 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-03-16 | Fabrice Bellet | CERT | Proof certified good | | 2025-03-16 | fordobr | C-PRP | M4649507/39753449729932318040170199 : 6D44EB68A7208458 Proof Certified Good
Proof Power: 7
| | 2025-03-16 | fordobr | F-ECM | Factor: 39753449729932318040170199 / ECM curve 24, B1=63446, B2=88280115, Edwards Sigma=4857995017716948 | | 2022-12-23 | Sid & Andy | NF-PM1 | B1=4300000, B2=11209426800 | | 2021-03-23 | -anonymous- | NF | no factor TF: 71-72 | | 2021-03-21 | -anonymous- | NF | no factor TF: 70-71 | | 2021-03-21 | -anonymous- | NF | no factor TF: 69-70 | | 2021-03-21 | -anonymous- | NF | no factor TF: 68-69 | | 2018-10-16 | chuenkit | NF | no factor TF: 67-68 | | 2018-07-06 | BloodERazor | NF | no factor TF: 66-67 | | 2018-06-25 | Ismo Laitela | NF-PM1 | B1=1988203, B2=61634303, E=12 | | 2016-02-23 | Mark Rose | NF | no factor TF: 62-63 | | 2015-07-07 | snme2pm1 | NF | no factor TF: 65-66 | | 2015-02-04 | monst | NF | no factor TF: 64-65 | | 2015-02-03 | Jayder | NF | no factor TF: 63-64 | | 2012-02-07 | Squeeky_Squirrel | NF-PM1 | B1=110000, B2=2090000, E=6 | | 2011-12-09 | GrunwalderGIMP | NF | no factor TF: 1-63 | | 2010-07-22 | markr | NF | no factor TF: 61-62 | | 2009-08-29 | Carsten Kossendey | NF-PM1 | B1=25000, B2=375000 | | 1999-12-08 | -anonymous- | C-LL | AD863E1A46B76319 | | 1998-09-13 | -anonymous- | C-LL | AD863E1A46B76319 | | 1998-06-01 | MadPoo 🙂 | NF | no factor TF: 1-61 |
|
