| 1658233 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 268 TF target 261 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 280 / 280 | | 30 | 250000 | 107 / 640 |
Estimated T-Level: 25.8 ⓘ TF below 2^81 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | | Steven Reasoner | F4C382D0C4E46B74 | 0 | Linux 32-bit,Prime95,v13,(aka WP2) | | Factored | 1998-11-14 | Robert Mutschler | F4C382D0C4E46B74 | 277841 | Windows,Prime95,v17,(aka WT1) | | Factored | 2015-07-06 | MadPoo 🙂 | F4C382D0C4E46B74 | 474088 | Windows 64-bit,Prime95,v26,(aka We4) |
|
| PRP | | Status | Proof | Date | User | Residue | Shift | Type | Base |
|---|
| Factored | Certified Good Power=6 | 2025-09-02 | Kriesel | CEE4BBE3E6FBFE67 | 0 | 1 | 3 |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | PRP without proof (not generated) | 2018-05-13 | storm5510 | CEE4BBE3E6FBFE67 | 1 | 98928 | 5 | 3 | | Verified | PRP without proof (not generated) | 2018-05-13 | ATH | CEE4BBE3E6FBFE67 | 1 | 961862 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-09-03 | Carlos Pinho | CERT | Proof certified good | | 2025-09-02 | Kriesel | C-PRP | CEE4BBE3E6FBFE67 Proof Certified Good
Proof Power: 6
| | 2018-05-13 | ATH | C-PRP | M1658233/109654994835105234675533433023465423 : CEE4BBE3E6FBFE67 | | 2018-05-13 | storm5510 | C-PRP | M1658233/109654994835105234675533433023465423 : CEE4BBE3E6FBFE67 | | 2018-05-12 | VictordeHollander | F-ECM | Factor: 109654994835105234675533433023465423 | | 2018-02-18 | Joss | NF-PM1 | B1=1658233, B2=80000000, E=12 | | 2018-02-04 | Joss | NF-PM1 | B1=1658233, B2=40000000, E=12 | | 2018-01-15 | Joss | NF-PM1 | B1=1658233, B2=20000000, E=12 | | 2017-10-13 | TJAOI | NF | no factor TF: 66-67 | | 2016-02-23 | Mark Rose | NF | no factor TF: 58-60 | | 2016-02-23 | Mark Rose | NF | no factor TF: 61-62 | | 2016-02-23 | Mark Rose | NF | no factor TF: 62-63 | | 2015-10-11 | ramgeis | NF | no factor TF: 65-66 | | 2015-07-06 | MadPoo 🙂 | C-LL | F4C382D0C4E46B74 | | 2015-05-09 | monst | NF | no factor TF: 64-65 | | 2015-05-08 | omylist | NF | no factor TF: 63-64 | | 2012-03-01 | Axon | NF-PM1 | B1=1000000, B2=20000000, E=12 | | 2012-03-01 | Axon | NF-PM1 | B1=1000000, B2=8000000, E=12 | | 2012-02-29 | Axon | NF-PM1 | B1=1000000 | | 2012-02-29 | Axon | NF-PM1 | B1=900000 | | 2012-02-29 | Axon | NF-PM1 | B1=800000 | | 2012-02-29 | Axon | NF-PM1 | B1=700000 | | 2012-02-29 | Axon | NF-PM1 | B1=600000 | | 2012-02-29 | Axon | NF-PM1 | B1=500000 | | 2012-02-29 | Axon | NF-PM1 | B1=400000 | | 2012-02-29 | Axon | NF-PM1 | B1=300000 | | 2012-02-29 | Axon | NF-PM1 | B1=200000 | | 2012-02-29 | Axon | NF-PM1 | B1=100000 | | 2010-08-13 | GrunwalderGIMP | NF | no factor TF: 1-63 | | 2010-04-29 | Architects Cubed | NF | no factor TF: 60-61 | | 2003-04-27 | -anonymous- | NF | no factor TF: 1-58 | | 1998-11-14 | bezahar | NF | no factor TF: 1-57 | | 1998-11-14 | bezahar | C-LL | F4C382D0C4E46B74 |
|
