| 5462449 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 272 TF target 266 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 53 / 280 |
Estimated T-Level: 20.9 ⓘ TF below 2^65 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | 1998-11-21 | Dan Moody | 83BC60D6BBCE8F60 | 0 | Windows,Prime95,v16,(aka WS1) | | Factored | 2000-08-10 | Kate Stange | 83BC60D6BBCE8F60 | 3966976 | Windows,Prime95,v18,(aka WU1) |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | Certified Good | 2025-03-26 | Blade Lei | 2D11999808EAA89A | 1 | 2209144 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-03-26 | KIKUTANI, Shigeru | CERT | Proof certified good | | 2025-03-26 | Blade Lei | C-PRP | M5462449/217081882429418287012273 : 2D11999808EAA89A Proof Certified Good
Proof Power: 7
| | 2025-03-18 | fordobr | F-ECM | Factor: 217081882429418287012273 / ECM curve 25, B1=50000, B2=45039225, Edwards Sigma=5992205800211038 | | 2021-10-24 | axn | NF-PM1 | B1=8000000, B2=400000000 | | 2021-10-10 | SRBase | NF | no factor TF: 71-72 | | 2021-08-23 | SRBase | NF | no factor TF: 70-71 | | 2021-08-18 | SRBase | NF | no factor TF: 69-70 | | 2020-09-14 | TJAOI | NF | no factor TF: 68-69 | | 2019-09-10 | USAFSS | NF-PM1 | B1=330000, B2=9817500 | | 2018-06-29 | ramgeis | NF | no factor TF: 67-68 | | 2016-07-01 | Gordon Spence | NF | no factor TF: 66-67 | | 2015-08-24 | snme2pm1 | NF | no factor TF: 65-66 | | 2014-12-30 | monst | NF | no factor TF: 64-65 | | 2014-12-30 | snme2pm1 | NF | no factor TF: 63-64 | | 2010-11-06 | Squeeky_Squirrel | NF-PM1 | B1=60000, B2=960000, E=6 | | 2009-08-26 | Carsten Kossendey | NF-PM1 | B1=25000, B2=356250 | | 2009-05-07 | GrunwalderGIMP | NF | no factor TF: 62-63 | | 2008-09-13 | -anonymous- | NF-PM1 | B1=10000, B2=250000 | | 2000-08-10 | -anonymous- | C-LL | 83BC60D6BBCE8F60 | | 1998-11-21 | Dan Moody | C-LL | 83BC60D6BBCE8F60 | | 1998-07-11 | -anonymous- | NF | no factor TF: 1-62 |
|
