| 5583671 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 270 TF target 266 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 9 / 280 |
Estimated T-Level: 20.2 ⓘ TF below 2^62 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | 1999-03-15 | Aleksandras | 91C20C8A0A217C06 | 0 | Windows,Prime95,v16,(aka WS1) | | Factored | 2000-09-08 | Stephen Wood | 91C20C8A0A217C06 | 3002467 | Linux 32-bit,Prime95,v20,(aka WW2) |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | Certified Good | 2020-08-11 | storm5510 | 8806618B0CC3E04F | 1 | 4349291 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-06-03 | Sid & Andy | NF-PM1 | B1=3500000, B2=7117186230 | | 2025-05-26 | Sid & Andy | NF | no factor TF: 69-70 | | 2020-08-12 | Jorge Coveiro | CERT | Proof certified good | | 2020-08-11 | storm5510 | C-PRP | M5583671/580242434364532823407 : 8806618B0CC3E04F Proof Certified Good
Proof Power: 7
| | 2020-08-11 | TJAOI | F | Factor: 580242434364532823407 / TF: 68-69 | | 2019-10-03 | GdS | NF-PM1 | B1=200000, B2=6000000 | | 2018-07-05 | ramgeis | NF | no factor TF: 67-68 | | 2016-07-31 | Gordon Spence | NF | no factor TF: 66-67 | | 2015-09-13 | snme2pm1 | NF | no factor TF: 65-66 | | 2014-12-22 | monst | NF | no factor TF: 64-65 | | 2014-12-21 | Nesowa | NF | no factor TF: 63-64 | | 2010-05-06 | Squeeky_Squirrel | NF-PM1 | B1=65000, B2=1121250, E=6 | | 2009-04-20 | GrunwalderGIMP | NF | no factor TF: 62-63 | | 2003-10-31 | -anonymous- | C-LL | 91C20C8A0A217C06 | | 2003-10-31 | -anonymous- | NF | no factor TF: 1-62 | | 2001-04-08 | -anonymous- | NF | no factor TF: 1-62 | | 2001-04-08 | -anonymous- | C-LL | 91C20C8A0A217C06 | | 2000-09-08 | Stephen Wood | C-LL | 91C20C8A0A217C06 | | 2000-08-10 | Stephen Wood | NF-PM1 | B1=20000, B2=20000 | | 1999-03-15 | -anonymous- | C-LL | 91C20C8A0A217C06 | | 1999-01-10 | -anonymous- | NF | no factor TF: 1-62 |
|
