| 5664731 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 269 TF target 266 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 9 / 280 |
Estimated T-Level: 20.2 ⓘ TF below 2^62 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | 1998-10-25 | Andrew Booker | 5557B7C103B56510 | 0 | Windows,Prime95,v16,(aka WS1) | | Factored | 2001-09-10 | Tamas Vincze | 5557B7C103B56510 | 2718602 | Windows,Prime95,v20,NT service,(aka WW5) |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | Certified Good | 2020-08-11 | storm5510 | 9DCE2F269ADB0A7B | 1 | 3506988 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-08-09 | Sid & Andy | NF-PM1 | B1=3400000, B2=6446338080 | | 2020-08-12 | Team_Inspector | CERT | Proof certified good | | 2020-08-11 | storm5510 | C-PRP | M5664731/388487488819502767729 : 9DCE2F269ADB0A7B Proof Certified Good
Proof Power: 7
| | 2020-08-11 | TJAOI | F | Factor: 388487488819502767729 / TF: 68-69 | | 2018-07-05 | ramgeis | NF | no factor TF: 67-68 | | 2016-06-22 | Gordon Spence | NF | no factor TF: 66-67 | | 2015-08-27 | snme2pm1 | NF | no factor TF: 65-66 | | 2014-11-23 | monst | NF | no factor TF: 64-65 | | 2014-11-22 | Nesowa | NF | no factor TF: 63-64 | | 2011-03-10 | markr | NF-PM1 | B1=140000, B2=2870000, E=6 | | 2009-04-10 | GrunwalderGIMP | NF | no factor TF: 62-63 | | 2001-09-10 | -anonymous- | C-LL | 5557B7C103B56510 | | 2001-06-03 | -anonymous- | NF-PM1 | B1=25000, B2=162500 | | 2001-05-27 | -anonymous- | NF-PM1 | B1=20000, B2=20000 | | 2000-11-25 | -anonymous- | NF-PM1 | B1=20000, B2=65000 | | 2000-08-24 | Amperio | NF-PM1 | B1=20000, B2=65000 | | 1998-10-25 | -anonymous- | C-LL | 5557B7C103B56510 | | 1998-09-13 | -anonymous- | NF | no factor TF: 1-62 |
|
