| 5340809 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 272 TF target 266 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 29 / 280 |
Estimated T-Level: 20.5 ⓘ TF below 2^63 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | 1998-07-29 | INTERSHOP Communications | 03110594626D5592 | 0 | Windows,Prime95,v16,NT service,(aka WS5) | | Factored | 2001-12-01 | Rick Lavoie | 03110594626D5592 | 753278 | Windows,Prime95,v21,(aka WX1) |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | Certified Good | 2025-03-08 | pilotpsk | 0F2698CD34BC169E | 1 | 554544 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-03-08 | Chuck | CERT | Proof certified good | | 2025-03-08 | pilotpsk | C-PRP | Proof Certified Good
Proof Power: 7
| | 2025-02-27 | Andrey Dobrynin | F-ECM | Factor: 452378717927414653256447 / ECM curve 11, B1=50000, B2=60054225, Edwards Sigma=3750462856734509 | | 2024-06-26 | tbusby | NF | no factor TF: 71-72 | | 2022-09-20 | Sid & Andy | NF-PM1 | B1=4000000, B2=10285831710 | | 2022-02-15 | mikr | NF | no factor TF: 70-71 | | 2022-01-26 | Ethan O'Connor | NF | no factor TF: 69-70 | | 2022-01-24 | Gordon Spence | NF | no factor TF: 69-70 | | 2020-08-17 | TJAOI | NF | no factor TF: 68-69 | | 2019-07-04 | King | NF-PM1 | B1=1000000, B2=22500000 | | 2019-02-26 | USAFSS | NF-PM1 | B1=320000, B2=9520000, E=12 | | 2018-06-19 | ramgeis | NF | no factor TF: 67-68 | | 2016-08-06 | Gordon Spence | NF | no factor TF: 66-67 | | 2015-08-17 | snme2pm1 | NF | no factor TF: 65-66 | | 2014-12-25 | VictordeHollander | NF | no factor TF: 64-65 | | 2014-12-25 | VictordeHollander | NF | no factor TF: 63-64 | | 2010-09-18 | Squeeky_Squirrel | NF-PM1 | B1=60000, B2=960000, E=6 | | 2009-05-27 | GrunwalderGIMP | NF | no factor TF: 62-63 | | 2001-12-01 | -anonymous- | NF-PM1 | B1=30000, B2=405000 | | 2001-12-01 | -anonymous- | C-LL | 03110594626D5592 | | 2001-05-20 | -anonymous- | NF-PM1 | B1=25000, B2=206250 | | 2000-08-10 | -anonymous- | C-LL | 823CFFA3F5E0BD__ | | 1998-07-29 | netconx | C-LL | 03110594626D5592 | | 1998-03-03 | -anonymous- | NF | no factor TF: 1-62 |
|
