| 3028541 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 271 TF target 264 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 280 / 280 | | 30 | 250000 | 62 / 640 |
Estimated T-Level: 25.5 ⓘ TF below 2^80 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | | Hal Anderson | C75314A03FE2A763 | 0 | Windows,Prime95,v14,NT service,(aka WQ5) | | Factored | 1999-07-27 | Andrew Haveland-Robinson | C75314A03FE2A763 | 258012 | Windows,Prime95,v18,(aka WU1) |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | Certified Good | 2025-01-01 | fordobr | 76F656BBA9885D0F | 1 | 70895 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-01-01 | Manfred_Bruder_01-05-1988_DE | CERT | Proof certified good | | 2025-01-01 | fordobr | C-PRP | M3028541/534294853712236683751777217513 : 76F656BBA9885D0F Proof Certified Good
Proof Power: 7
| | 2025-01-01 | fordobr | F-ECM | Factor: 534294853712236683751777217513 / ECM curve 21, B1=153594, B2=459443985, Edwards Sigma=8561760978330047 | | 2024-04-19 | Denial140 | NF-PM1 | B1=33333333, B2=216410046930 | | 2024-03-25 | Denial140 | NF-PM1 | B1=33333333 | | 2024-03-21 | Joss | NF-PM1 | B1=10000000, B2=10000856250 | | 2022-06-16 | mikr | NF | no factor TF: 70-71 | | 2022-02-05 | Gordon Spence | NF | no factor TF: 69-70 | | 2021-03-11 | TJAOI | NF | no factor TF: 68-69 | | 2020-03-06 | oodaira | NF-PM1 | B1=32646971, B2=1860877347 | | 2019-08-05 | mikr | NF-PM1 | B1=3000000, B2=100000000 | | 2018-08-11 | Joss | NF-PM1 | B1=410000, B2=4100000 | | 2018-08-08 | Joss | NF-PM1 | B1=410000, B2=2460000 | | 2018-08-08 | Joss | NF-PM1 | B1=410000, B2=2050000 | | 2018-08-08 | Joss | NF-PM1 | B1=410000, B2=1640000 | | 2018-08-07 | Joss | NF-PM1 | B1=410000, B2=1230000 | | 2018-08-06 | Joss | NF-PM1 | B1=410000, B2=820000 | | 2018-07-16 | ramgeis | NF | no factor TF: 67-68 | | 2017-05-02 | Gordon Spence | NF | no factor TF: 66-67 | | 2016-04-28 | USAFSS | NF-PM1 | B1=205000, B2=5637500, E=12 | | 2015-06-02 | Tha | NF | no factor TF: 65-66 | | 2015-02-07 | VictordeHollander | NF | no factor TF: 64-65 | | 2015-02-07 | VictordeHollander | NF | no factor TF: 63-64 | | 2013-01-07 | dbaugh | NF | no factor TF: 62-63 | | 2010-10-12 | markr | NF-PM1 | B1=115000, B2=2357500, E=6 | | 2010-10-10 | Sid & Andy | NF | no factor TF: 61-62 | | 2009-01-30 | Jayson King | NF | no factor TF: 60-61 | | 2004-02-07 | -anonymous- | NF-PM1 | B1=2048, B2=204800 | | 2003-12-23 | Team Prime Rib | NF-PM1 | B1=10000 | | 2001-04-01 | David Campeau | NF | no factor TF: 1-60 | | 1999-07-27 | -anonymous- | C-LL | C75314A03FE2A763 |
|
