| 5432261 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 272 TF target 266 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 102 / 280 |
Estimated T-Level: 21.8 ⓘ TF below 2^67 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | 1998-08-16 | Philip Gross | 46D42A69D818AD9C | 0 | Windows,Prime95,v16,(aka WS1) | | Factored | 2001-06-03 | Steve Stancliff | 46D42A69D818AD9C | 704487 | Linux 32-bit,Prime95,v20,(aka WW2) |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | Certified Good | 2025-03-19 | Stefan G Hoffmann | 295D9F929C1DA7A8 | 1 | 1588390 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-03-19 | Section 31 | CERT | Proof certified good | | 2025-03-19 | Stefan G Hoffmann | C-PRP | M5432261/28467926198695102559969 : 295D9F929C1DA7A8 Proof Certified Good
Proof Power: 7
| | 2025-03-14 | fordobr | F-ECM | Factor: 28467926198695102559969 / ECM curve 48, B1=50000, B2=64857975, Edwards Sigma=2625030270079889 | | 2021-11-27 | ANONYMOUS | NF-PM1 | B1=2000000, B2=2927918070 | | 2021-10-13 | SRBase | NF | no factor TF: 71-72 | | 2021-08-23 | SRBase | NF | no factor TF: 70-71 | | 2021-08-19 | SRBase | NF | no factor TF: 69-70 | | 2020-08-31 | TJAOI | NF | no factor TF: 68-69 | | 2020-05-03 | King | NF-PM1 | B1=1000000, B2=22500000 | | 2018-06-29 | ramgeis | NF | no factor TF: 67-68 | | 2016-06-22 | Gordon Spence | NF | no factor TF: 66-67 | | 2015-08-23 | snme2pm1 | NF | no factor TF: 65-66 | | 2015-01-01 | monst | NF | no factor TF: 64-65 | | 2014-12-31 | snme2pm1 | NF | no factor TF: 63-64 | | 2010-04-19 | Squeeky_Squirrel | NF-PM1 | B1=60000, B2=1035000, E=6 | | 2009-05-13 | GrunwalderGIMP | NF | no factor TF: 62-63 | | 2001-06-03 | -anonymous- | C-LL | 46D42A69D818AD9C | | 2001-04-29 | -anonymous- | NF-PM1 | B1=20000, B2=20000 | | 1998-08-16 | -anonymous- | C-LL | 46D42A69D818AD9C | | 1998-05-01 | -anonymous- | NF | no factor TF: 1-62 | | 1998-04-11 | -anonymous- | NF | no factor TF: 1-61 |
|
