| 5503349 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 272 TF target 266 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 65 / 280 |
Estimated T-Level: 21.2 ⓘ TF below 2^65 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | 1999-09-22 | Keith O'Dell | B2767F78A7ACF972 | 703305 | Windows,Prime95,v19,(aka WV1) | | Factored | 2001-02-11 | Gordon M. Spence | B2767F78A7ACF972 | 1778558 | Windows,Prime95,v20,NT service,(aka WW5) |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | Certified Good | 2025-04-01 | COMPUTRON9001 | 927CB51DB77F8966 | 1 | 4156511 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-04-01 | proski | CERT | Proof certified good | | 2025-04-01 | COMPUTRON9001 | C-PRP | M5503349/122517574024558193867414537 : 927CB51DB77F8966 Proof Certified Good
Proof Power: 7
| | 2025-03-24 | fordobr | F-ECM | Factor: 122517574024558193867414537 / ECM curve 27, B1=50000, B2=86479575, Edwards Sigma=1200240725609430 | | 2022-08-07 | Sid & Andy | NF-PM1 | B1=7000000, B2=5996001660 | | 2021-09-16 | 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 | | 2020-11-14 | Dylan Delgado | NF-PM1 | B1=1000000, B2=20000000 | | 2020-09-07 | TJAOI | NF | no factor TF: 68-69 | | 2019-09-08 | GdS | NF-PM1 | B1=200000, B2=6000000 | | 2018-07-05 | ramgeis | NF | no factor TF: 67-68 | | 2016-07-14 | Gordon Spence | NF | no factor TF: 66-67 | | 2015-08-30 | snme2pm1 | NF | no factor TF: 65-66 | | 2014-12-02 | monst | NF | no factor TF: 64-65 | | 2014-12-01 | Nesowa | NF | no factor TF: 63-64 | | 2010-11-20 | Squeeky_Squirrel | NF-PM1 | B1=60000, B2=975000, E=6 | | 2009-05-01 | GrunwalderGIMP | NF | no factor TF: 62-63 | | 2001-02-11 | Gordon Spence | C-LL | B2767F78A7ACF972 | | 2000-12-14 | Gordon Spence | NF-PM1 | B1=25000, B2=331250 | | 1999-09-22 | -anonymous- | C-LL | B2767F78A7ACF972 | | 1998-12-21 | -anonymous- | C-LL | 2232BA6DE916BC__ | | 1998-06-01 | -anonymous- | NF | no factor TF: 1-62 | | 1998-04-05 | -anonymous- | NF | no factor TF: 1-61 |
|
