| 5368081 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 272 TF target 266 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 50 / 280 |
Estimated T-Level: 20.9 ⓘ TF below 2^64 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | 2000-06-23 | Petri Holopainen | 07A7933C54AF326F | 1952597 | Windows,Prime95,v18,(aka WU1) | | Factored | 2002-01-08 | Hannu Kalli | 07A7933C54AF326F | 3900435 | Windows,Prime95,v20,NT service,(aka WW5) |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | Certified Good | 2025-03-10 | Perig | 0D9181A0F3A1FAC6 | 1 | 555871 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-03-10 | Oliver Kruse | CERT | Proof certified good | | 2025-03-10 | Perig | C-PRP | M5368081/355295912783343919265111 : 0D9181A0F3A1FAC6 Proof Certified Good
Proof Power: 7
| | 2025-03-05 | fordobr | F-ECM | Factor: 355295912783343919265111 / ECM curve 23, B1=50000, B2=45039225, Edwards Sigma=1238025276731149 | | 2024-05-17 | kracker | NF | no factor TF: 71-72 | | 2022-09-21 | Sid & Andy | NF-PM1 | B1=4000000, B2=10285831710 | | 2022-02-22 | mikr | NF | no factor TF: 70-71 | | 2021-12-20 | mnd9 | NF | no factor TF: 69-70 | | 2020-09-14 | TJAOI | NF | no factor TF: 68-69 | | 2019-07-17 | USAFSS | NF-PM1 | B1=320000, B2=9520000 | | 2018-06-19 | ramgeis | NF | no factor TF: 67-68 | | 2016-08-09 | Gordon Spence | NF | no factor TF: 66-67 | | 2015-08-18 | snme2pm1 | NF | no factor TF: 65-66 | | 2014-12-23 | VictordeHollander | NF | no factor TF: 64-65 | | 2014-12-23 | VictordeHollander | NF | no factor TF: 63-64 | | 2010-05-09 | Squeeky_Squirrel | NF-PM1 | B1=60000, B2=1005000, E=6 | | 2009-05-21 | GrunwalderGIMP | NF | no factor TF: 62-63 | | 2002-01-08 | -anonymous- | C-LL | 07A7933C54AF326F | | 2001-05-27 | -anonymous- | NF-PM1 | B1=20000, B2=160000 | | 2000-06-23 | -anonymous- | C-LL | 07A7933C54AF326F | | 1999-05-02 | -anonymous- | C-LL | 07A7933C54AF326F | | 1998-09-13 | -anonymous- | NF | no factor TF: 1-62 |
|
