| 9203111 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 270 TF target 268 |
| Factored | |
| P-1 factors | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 3 / 280 |
Estimated T-Level: 20.1 ⓘ TF below 2^62 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | 2000-08-17 | MSR Cambridge | 1B9D7C644CFF7816 | 4443103 | Windows,Prime95,v18,NT service,(aka WU5) | | Factored | 2003-08-08 | Marc Honey | 1B9D7C644CFF7816 | 4519660 | Windows,Prime95,v20,(aka WW1) |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | Certified Good | 2021-07-17 | Chad Steenerson | B682108C60E7B925 | 1 | 2928961 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-06-17 | beep | NF | no factor TF: 69-70 | | 2021-07-17 | MZW61 | CERT | Proof certified good | | 2021-07-17 | Chad Steenerson | C-PRP | M9203111/1722727429980742974953 : B682108C60E7B925 Proof Certified Good
Proof Power: 8
| | 2021-07-09 | Tha | F-PM1 | Factor: 1722727429980742974953 / B1=2000000, B2=162000000 | | 2019-09-24 | mnd9 | NF | no factor TF: 68-69 | | 2017-03-07 | snme2pm1 | NF | no factor TF: 67-68 | | 2016-04-23 | snme2pm1 | NF | no factor TF: 66-67 | | 2015-05-08 | VictordeHollander | NF | no factor TF: 65-66 | | 2013-09-08 | Nesowa | NF | no factor TF: 64-65 | | 2012-09-18 | Nesowa | NF-PM1 | B1=110000, B2=2035000, E=6 | | 2003-08-08 | mhoney | C-LL | 1B9D7C644CFF7816 | | 2003-03-16 | mhoney | NF-PM1 | B1=45000, B2=472500 | | 2000-08-17 | ANONYMOUS | C-LL | 1B9D7C644CFF7816 | | 1999-04-02 | Greg Hewgill | NF | no factor TF: 1-64 | | 1999-01-29 | -anonymous- | NF | no factor TF: 1-62 |
|
