| 4910221 | Composite, with 2 known prime factors. Cofactor is composite. Trial Factored to 268 TF target 265 |
| Factored | |
| P-1 factors | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 6 / 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 | 1998-08-09 | Tom Murphy 7 | 94679CDF0AE6FE25 | 0 | Windows,Prime95,v15,(aka WR1) | | Factored | 2000-08-31 | Robert Dean Shepard | 94679CDF0AE6FE25 | 3553182 | Windows,Prime95,v20,NT service,(aka WW5) |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Factored | PRP without proof (not generated) | 2017-09-20 | kkmrkkblmbrbk | 2DBB8B9E0BB2DD5C | 1 | 0 | 1 | 3 | | Factored | PRP without proof (not generated) | 2018-05-07 | storm5510 | 2DBB8B9E0BB2DD5C | 1 | 2056535 | 1 | 3 | | Factored | PRP without proof (not generated) | 2018-05-24 | kracker | 2DBB8B9E0BB2DD5C | 1 | 4699822 | 1 | 3 | | Verified | Certified Good | 2023-07-17 | Perig | B8F6AEB06B44B41A | 2 | 3970239 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2023-07-17 | ANONYMOUS | CERT | Proof certified good | | 2023-07-17 | Perig | C-PRP | M4910221/46529037365580322327/108429098260523794264153 : B8F6AEB06B44B41A Proof Certified Good
Proof Power: 7
| | 2023-07-11 | USAFSS | F-PM1 | Factor: 108429098260523794264153 / B1=384000, B2=227276910 | | 2018-05-24 | kracker | C-PRP | M4910221/46529037365580322327 : 2DBB8B9E0BB2DD5C | | 2018-05-07 | storm5510 | C-PRP | M4910221/46529037365580322327 : 2DBB8B9E0BB2DD5C | | 2017-09-20 | kkmrkkblmbrbk | C-PRP | M4910221/46529037365580322327 : 2DBB8B9E0BB2DD5C | | 2015-07-24 | snme2pm1 | F | Factor: 46529037365580322327 / TF: 65-66* | | 2014-12-29 | VictordeHollander | NF | no factor TF: 64-65 | | 2014-12-29 | VictordeHollander | NF | no factor TF: 63-64 | | 2011-09-03 | GrunwalderGIMP | NF | no factor TF: 1-63 | | 2010-04-02 | Richard B. Woods | NF | no factor TF: 61-62 | | 2010-01-04 | markr | NF-PM1 | B1=100000, B2=2500000, E=6 | | 2000-08-31 | -anonymous- | C-LL | 94679CDF0AE6FE25 | | 2000-08-10 | -anonymous- | NF-PM1 | B1=20000, B2=145000 | | 1998-08-09 | Tom 7 | C-LL | 94679CDF0AE6FE25 |
|
