| 2619857 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 268 TF target 263 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 188 / 280 |
Estimated T-Level: 23.4 ⓘ TF below 2^73 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | | Todd Reagan | 0D03A1D13225977A | 0 | Windows,Prime95,v13,(aka WP1) | | Factored | 1999-06-15 | Willem van der Vegt | 0D03A1D13225977A | 1473103 | 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) | 2017-10-17 | Oliver Kruse | ADCA92751C1E723F | 1 | 2006414 | 5 | 3 | | Verified | PRP without proof (not generated) | 2017-12-02 | storm5510 | ADCA92751C1E723F | 1 | 385958 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2022-03-11 | LordJulius | NF | no factor TF: 1-60 | | 2019-07-04 | alpertron | NF-PM1 | B1=2000000, B2=60000000, E=12 | | 2017-12-02 | storm5510 | C-PRP | M2619857/568893273331735959007 : ADCA92751C1E723F | | 2017-10-17 | Oliver Kruse | C-PRP | M2619857/568893273331735959007 : ADCA92751C1E723F | | 2010-06-11 | Walt Cooney | F-ECM | Factor: 568893273331735959007 | | 2009-01-31 | Sturle Sunde | NF | no factor TF: 60-61 | | 2003-11-08 | Team Prime Rib | NF-PM1 | B1=15000, B2=217500 | | 2003-10-31 | -anonymous- | NF-PM1 | B1=2048, B2=204800 | | 1999-06-15 | -anonymous- | C-LL | 0D03A1D13225977A | | 1999-03-26 | -anonymous- | NF | no factor TF: 1-59 |
|
