| 2489603 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 268 TF target 263 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 185 / 280 |
Estimated T-Level: 23.3 ⓘ TF below 2^72 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | | Robert Clark | ECA8D1DF3B4370D4 | 0 | Windows,Prime95,v14,(aka WQ1) | | Factored | 1999-06-06 | Shane Sanford | ECA8D1DF3B4370D4 | 2410236 | 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) | 2017-10-14 | Oliver Kruse | FB151EFAB16C039A | 1 | 555784 | 5 | 3 | | Verified | PRP without proof (not generated) | 2017-11-29 | storm5510 | FB151EFAB16C039A | 1 | 169093 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2023-01-25 | USAFSS | NF-PM1 | B1=218000, B2=238697550 | | 2022-03-10 | LordJulius | NF | no factor TF: 1-60 | | 2017-11-29 | storm5510 | C-PRP | M2489603/2815845808731910553 : FB151EFAB16C039A | | 2017-10-14 | Oliver Kruse | C-PRP | M2489603/2815845808731910553 : FB151EFAB16C039A | | 2010-03-29 | James Classen | F-ECM | Factor: 2815845808731910553 | | 2009-01-15 | Sturle Sunde | NF | no factor TF: 60-61 | | 2003-10-31 | Team Prime Rib | NF-PM1 | B1=15000, B2=228750 | | 2003-10-23 | -anonymous- | NF-PM1 | B1=2048, B2=204800 | | 1999-06-06 | shaneamy | C-LL | ECA8D1DF3B4370D4 | | 1999-05-02 | shaneamy | NF | no factor TF: 1-59 |
|
