| 3520663 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 272 TF target 264 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 264 / 280 |
Estimated T-Level: 24.7 ⓘ TF below 2^77 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | | Greg Hewgill | B05BB78C4AF56BB2 | 0 | Windows,Prime95,v14,NT service,(aka WQ5) | | Factored | 1999-07-26 | Christopher G. Lewis | B05BB78C4AF56BB2 | 2583362 | Windows,Prime95,v18,NT service,(aka WU5) |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | Certified Good | 2025-03-09 | fordobr | 3F6E3774C875F739 | 1 | 954536 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-03-09 | Nicholas Hodson | CERT | Proof certified good | | 2025-03-09 | fordobr | C-PRP | M3520663/741403614399943054703911 : 3F6E3774C875F739 Proof Certified Good
Proof Power: 7
| | 2025-03-09 | fordobr | F-ECM | Factor: 741403614399943054703911 / ECM curve 25, B1=130604, B2=169505700, Edwards Sigma=8267581942826394 | | 2023-06-08 | Sid & Andy | NF-PM1 | B1=5900000, B2=17849291460 | | 2021-12-16 | mikr | NF-PM1 | B1=4000000, B2=324000000 | | 2021-09-01 | ArtyomP | NF-PP1 | Start=6/5, B1=50000, B2=2500000 | | 2021-09-01 | ArtyomP | NF-PP1 | Start=2/7, B1=50000, B2=2500000 | | 2021-03-20 | -anonymous- | NF | no factor TF: 71-72 | | 2021-03-18 | -anonymous- | NF | no factor TF: 70-71 | | 2021-03-18 | -anonymous- | NF | no factor TF: 69-70 | | 2021-01-18 | axn | NF | no factor TF: 68-69 | | 2021-01-08 | Dylan Delgado | NF-PM1 | B1=1600000, B2=50000000, E=12 | | 2018-12-03 | TJAOI | NF | no factor TF: 67-68 | | 2017-04-22 | Joss | NF-PM1 | B1=340000, B2=3400000, E=6 | | 2017-01-10 | Gordon Spence | NF | no factor TF: 66-67 | | 2016-03-03 | ramgeis | NF | no factor TF: 65-66 | | 2016-02-23 | Mark Rose | NF | no factor TF: 62-63 | | 2016-02-23 | Mark Rose | NF | no factor TF: 1-60 | | 2015-10-14 | Squeeky_Squirrel | NF-PM1 | B1=170000, B2=4590000, E=6 | | 2015-01-27 | VictordeHollander | NF | no factor TF: 64-65 | | 2015-01-27 | VictordeHollander | NF | no factor TF: 63-64 | | 2014-11-10 | Joss | NF-PM1 | B1=96462 | | 2014-08-07 | Joss | NF-PM1 | B1=78231 | | 2012-06-20 | GrunwalderGIMP | NF | no factor TF: 1-63 | | 2011-11-19 | USAFSS | NF-PM1 | B1=60000, B2=990000, E=6 | | 2011-07-09 | Grant McCracken | NF | no factor TF: 61-62 | | 2009-07-06 | Carsten Kossendey | NF-PM1 | B1=20000, B2=245000 | | 2009-03-18 | S485122 | NF | no factor TF: 60-61 | | 1999-07-26 | -anonymous- | C-LL | B05BB78C4AF56BB2 |
|
