| 4573571 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 273 TF target 265 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 155 / 280 |
Estimated T-Level: 22.8 ⓘ TF below 2^71 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | 1998-03-17 | Chris Kocur | 3D97690EC61A799E | 0 | Windows,Prime95,v15,(aka WR1) | | Factored | 2001-11-24 | tm | 3D97690EC61A799E | 407454 | Windows,Prime95,v20,(aka WW1) | | Factored | 2001-12-22 | tm | 3D97690EC61A799E | 559068 | Windows,Prime95,v20,(aka WW1) | | Bad | 2002-06-09 | tm | 46CB1935CACDEC69 | 3549130 | Windows,Prime95,v20,(aka WW1) | | Bad | 2002-06-09 | tm | D2D1574E964C2F82 | 3549130 | Windows,Prime95,v20,(aka WW1) |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | Certified Good | 2025-03-22 | fordobr | BF89BA5AAE67B1A3 | 1 | 268359 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-03-22 | Massimo Cappelli (ik5pwa) | CERT | Proof certified good | | 2025-03-22 | fordobr | C-PRP | M4573571/60105226899671476657345543 : BF89BA5AAE67B1A3 Proof Certified Good
Proof Power: 7
| | 2025-03-22 | fordobr | F-ECM | Factor: 60105226899671476657345543 / ECM curve 34, B1=69679, B2=88280115, Edwards Sigma=367813559433869 | | 2022-12-01 | Sid & Andy | NF-PM1 | B1=4400000, B2=11424956400 | | 2021-04-10 | Dylan Delgado | NF-PM1 | B1=480000, B2=14400000, E=12 | | 2021-02-18 | -anonymous- | NF | no factor TF: 72-73 | | 2021-01-31 | -anonymous- | NF | no factor TF: 71-72 | | 2021-01-26 | -anonymous- | NF | no factor TF: 70-71 | | 2021-01-26 | -anonymous- | NF | no factor TF: 69-70 | | 2021-01-26 | -anonymous- | NF | no factor TF: 68-69 | | 2018-05-21 | ramgeis | NF | no factor TF: 67-68 | | 2018-05-21 | ramgeis | NF | no factor TF: 66-67 | | 2016-02-23 | Mark Rose | NF | no factor TF: 62-63 | | 2015-07-02 | snme2pm1 | NF | no factor TF: 65-66 | | 2014-12-24 | monst | NF | no factor TF: 64-65 | | 2014-12-23 | Jayder | NF | no factor TF: 63-64 | | 2012-09-09 | Squeeky_Squirrel | NF-PM1 | B1=300000, B2=7725000, E=12 | | 2012-01-17 | GrunwalderGIMP | NF | no factor TF: 1-63 | | 2010-08-22 | markr | NF | no factor TF: 61-62 | | 2002-06-09 | -anonymous- | C-LL | 46CB1935CACDEC69 | | 2002-06-09 | -anonymous- | C-LL | D2D1574E964C2F82 | | 2002-02-17 | David Campeau | NF | no factor TF: 1-61 | | 2002-02-03 | -anonymous- | NF-PM1 | B1=25000, B2=306250 | | 2002-01-08 | -anonymous- | NF-PM1 | B1=25000, B2=306250 | | 2001-12-22 | -anonymous- | C-LL | 3D97690EC61A799E | | 2001-11-24 | -anonymous- | NF-PM1 | B1=25000, B2=306250 | | 2001-11-24 | -anonymous- | C-LL | 3D97690EC61A799E | | 2001-11-17 | -anonymous- | NF-PM1 | B1=25000, B2=306250 | | 2001-08-12 | -anonymous- | NF-PM1 | B1=25000, B2=356250 | | 2001-08-04 | -anonymous- | NF-PM1 | B1=25000, B2=306250 | | 2001-07-22 | -anonymous- | NF-PM1 | B1=25000, B2=356250 | | 2001-07-17 | -anonymous- | NF-PM1 | B1=25000, B2=356250 | | 2001-03-05 | -anonymous- | NF-PM1 | B1=25000, B2=306250 | | 2000-12-14 | -anonymous- | NF-PM1 | B1=25000, B2=306250 | | 1998-03-17 | ckprime | C-LL | 3D97690EC61A799E |
|
