| 5440417 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 272 TF target 266 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 37 / 280 |
Estimated T-Level: 20.7 ⓘ TF below 2^64 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | 1998-08-16 | Jim Simpson | C400C3CFFB8B44E0 | 0 | Windows,Prime95,v16,(aka WS1) | | Factored | 2000-08-01 | chris clark | C400C3CFFB8B44E0 | 912274 | Linux 32-bit,Prime95,v19,(aka WV2) |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | Certified Good | 2025-03-20 | blin00 | 1589E6D31F1EBC84 | 1 | 416609 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-03-20 | George Woltman | CERT | Proof certified good | | 2025-03-20 | blin00 | C-PRP | M5440417/46685990824441816386485039 : 1589E6D31F1EBC84 Proof Certified Good
Proof Power: 7
| | 2025-03-15 | Ruslan Borisov | F-ECM | Factor: 46685990824441816386485039 / ECM curve 16, B1=50000, B2=45039225, Edwards Sigma=6696387633925073 | | 2022-07-13 | Sid & Andy | NF-PM1 | B1=5000000, B2=6418231050 | | 2021-09-16 | LaurV | NF | no factor TF: 71-72 | | 2021-09-16 | SRBase | NF | no factor TF: 70-71 | | 2021-08-22 | SRBase | NF | no factor TF: 69-70 | | 2021-06-09 | Dylan Delgado | NF-PM1 | B1=1200000, B2=85200000 | | 2020-08-24 | TJAOI | NF | no factor TF: 68-69 | | 2019-08-14 | Ivan M | NF-PM1 | B1=1000000, B2=20000000 | | 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 | | 2009-08-24 | Carsten Kossendey | NF-PM1 | B1=25000, B2=356250 | | 2009-05-10 | GrunwalderGIMP | NF | no factor TF: 62-63 | | 2000-08-01 | -anonymous- | C-LL | C400C3CFFB8B44E0 | | 1998-08-16 | -anonymous- | C-LL | C400C3CFFB8B44E0 | | 1998-07-29 | -anonymous- | NF | no factor TF: 1-61 | | 1998-04-27 | -anonymous- | NF | no factor TF: 1-62 | | 1998-04-11 | -anonymous- | NF | no factor TF: 1-61 |
|
