| 2270141 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 268 TF target 262 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 280 / 280 | | 30 | 250000 | 254 / 640 |
Estimated T-Level: 27.0 ⓘ TF below 2^85 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | | Bruce Valk | 4E8737D2AE888E51 | 0 | Windows,Prime95,v13,NT service,(aka WP5) | | Factored | 1999-03-15 | Alan Lund | 4E8737D2AE888E51 | 97526 | Windows,Prime95,v17,(aka WT1) |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | PRP without proof (not generated) | 2017-10-11 | Oliver Kruse | C00102587CBB1D3E | 1 | 0 | 1 | 3 | | Verified | PRP without proof (not generated) | 2017-11-21 | storm5510 | C00102587CBB1D3E | 1 | 1883976 | 1 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2017-11-21 | storm5510 | C-PRP | M2270141/1952544660806881049263 : C00102587CBB1D3E | | 2017-10-11 | Oliver Kruse | C-PRP | M2270141/1952544660806881049263 : C00102587CBB1D3E | | 2016-04-27 | alpertron | NF-PM1 | B1=500000, B2=15000000, E=12 | | 2011-01-02 | markr | F-PM1 | Factor: 1952544660806881049263 | | 2010-11-12 | Joss | NF-PM1 | B1=30000 | | 2010-11-06 | Joss | NF-PM1 | B1=15000 | | 2009-01-14 | Sturle Sunde | NF | no factor TF: 60-61 | | 2003-04-27 | -anonymous- | NF-PM1 | B1=2048, B2=204800, E=12 | | 1999-03-15 | -anonymous- | C-LL | 4E8737D2AE888E51 |
|
