| 5440013 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 272 TF target 266 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 93 / 280 |
Estimated T-Level: 21.7 ⓘ TF below 2^67 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | 1998-10-04 | Albrecht Heeffer | 2CAD13FE8363D81A | 0 | Windows,Prime95,v16,(aka WS1) | | Factored | 2000-07-17 | chris clark | 2CAD13FE8363D81A | 1974622 | Linux 32-bit,Prime95,v19,(aka WV2) |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | Certified Good | 2025-03-22 | Ashton | 67D7952A14ECFBE8 | 1 | 3166090 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-03-22 | Marvinist | CERT | Proof certified good | | 2025-03-22 | Ashton | C-PRP | M5440013/12880351788205922676391 : 67D7952A14ECFBE8 Proof Certified Good
Proof Power: 7
| | 2025-03-16 | fordobr | F-ECM | Factor: 12880351788205922676391 / ECM curve 42, B1=50000, B2=64857975, Edwards Sigma=325494234745537 | | 2022-07-12 | Sid & Andy | NF-PM1 | B1=5000000, B2=6418231050 | | 2021-09-17 | SRBase | NF | no factor TF: 71-72 | | 2021-08-30 | SRBase | NF | no factor TF: 70-71 | | 2021-08-18 | SRBase | NF | no factor TF: 69-70 | | 2021-06-08 | Dylan Delgado | NF-PM1 | B1=600000, B2=36600000 | | 2020-08-24 | TJAOI | NF | no factor TF: 68-69 | | 2019-08-06 | Ivan M | NF-PM1 | B1=500000, B2=10000000 | | 2018-06-29 | ramgeis | NF | no factor TF: 67-68 | | 2016-06-25 | Gordon Spence | NF | no factor TF: 66-67 | | 2015-08-23 | snme2pm1 | NF | no factor TF: 65-66 | | 2014-12-31 | monst | NF | no factor TF: 64-65 | | 2014-12-31 | snme2pm1 | NF | no factor TF: 63-64 | | 2010-10-29 | Squeeky_Squirrel | NF-PM1 | B1=60000, B2=960000, E=6 | | 2009-08-25 | Carsten Kossendey | NF-PM1 | B1=25000, B2=356250 | | 2009-05-10 | GrunwalderGIMP | NF | no factor TF: 62-63 | | 2000-07-17 | -anonymous- | C-LL | 2CAD13FE8363D81A | | 1998-10-04 | Albrecht Heeffer | C-LL | 2CAD13FE8363D81A | | 1998-06-01 | slaur | NF | no factor TF: 1-62 |
|
