| 3618851 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 270 TF target 264 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 150 / 280 |
Estimated T-Level: 22.7 ⓘ TF below 2^70 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | | David Jaquay | 0013C3C52070C137 | 0 | Windows,Prime95,v14,(aka WQ1) | | Factored | 1999-07-26 | Andy Kohler | 0013C3C52070C137 | 2404315 | Windows,Prime95,v18,NT service,(aka WU5) |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | Certified Good | 2025-02-25 | fordobr | DDECF3662E9186DA | 1 | 3063556 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-02-25 | DanMB | CERT | Proof certified good | | 2025-02-25 | fordobr | C-PRP | M3618851/38992400539142987844937 : DDECF3662E9186DA Proof Certified Good
Proof Power: 7
| | 2025-02-25 | fordobr | F-ECM | Factor: 38992400539142987844937 / ECM curve 5, B1=120386, B2=275563554, Edwards Sigma=977889024689122 | | 2024-06-25 | Joss | NF-PM1 | B1=10000000, B2=14919114210 | | 2024-01-18 | Joss | NF-PM1 | B1=2379970, B2=4778283510 | | 2022-01-27 | Gordon Spence | NF | no factor TF: 69-70 | | 2020-10-21 | axn | NF | no factor TF: 68-69 | | 2020-08-07 | axn | NF-PM1 | B1=30000000, B2=1000000000 | | 2020-06-17 | axn | NF-PM1 | B1=30000000, B2=600000000 | | 2018-11-19 | TJAOI | NF | no factor TF: 67-68 | | 2016-12-23 | Gordon Spence | NF | no factor TF: 66-67 | | 2016-02-23 | Mark Rose | NF | no factor TF: 1-60 | | 2016-02-23 | Mark Rose | NF | no factor TF: 62-63 | | 2015-10-18 | ramgeis | NF | no factor TF: 65-66 | | 2015-01-20 | VictordeHollander | NF | no factor TF: 64-65 | | 2015-01-20 | VictordeHollander | NF | no factor TF: 63-64 | | 2012-06-05 | GrunwalderGIMP | NF | no factor TF: 1-63 | | 2011-12-19 | markr | NF-PM1 | B1=240000, B2=6180000, E=12 | | 2011-05-27 | markr | NF | no factor TF: 61-62 | | 2009-07-06 | Carsten Kossendey | NF-PM1 | B1=20000, B2=245000 | | 2009-03-12 | S485122 | NF | no factor TF: 60-61 | | 1999-07-26 | akohler | C-LL | 0013C3C52070C137 |
|
