| 2578417 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 268 TF target 263 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 160 / 280 |
Estimated T-Level: 22.9 ⓘ TF below 2^71 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | | David Metcalfe | 9852DFE6A97EA036 | 0 | Windows,Prime95,v14,NT service,(aka WQ5) | | Factored | 1999-09-22 | Matrix14 | 9852DFE6A97EA036 | 1948644 | Windows,Prime95,v18,(aka WU1) |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | PRP without proof (not generated) | 2017-10-15 | Oliver Kruse | A19A00C199FDD951 | 1 | 2460257 | 5 | 3 | | Verified | PRP without proof (not generated) | 2017-12-01 | storm5510 | A19A00C199FDD951 | 1 | 160500 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2023-01-25 | USAFSS | NF-PM1 | B1=232000, B2=246845610 | | 2017-12-01 | storm5510 | C-PRP | M2578417/1155721866549537337 : A19A00C199FDD951 | | 2017-10-15 | Oliver Kruse | C-PRP | M2578417/1155721866549537337 : A19A00C199FDD951 | | 2009-01-31 | Sturle Sunde | F | Factor: 1155721866549537337 | | 2003-11-08 | Team Prime Rib | NF-PM1 | B1=15000, B2=202500 | | 2003-10-31 | -anonymous- | NF-PM1 | B1=2048, B2=204800 | | 1999-09-22 | -anonymous- | C-LL | 9852DFE6A97EA036 | | 1999-03-26 | -anonymous- | NF | no factor TF: 1-59 |
|
