| 2377 | Composite, with 1 known prime factor. Cofactor is composite. |
| Factored | |
| TF | Trial Factored to 268 TF target 244 |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 280 / 280 | | 30 | 250000 | 640 / 640 | | 35 | 1000000 | 1566 / 1566 | | 40 | 3000000 | 4588 / 4588 | | 45 | 11000000 | 9201 / 9201 | | 50 | 44000000 | 16550 / 16550 | | 55 | 110000000 | 40830 / 40830 | | 60 | 260000000 | 105362 / 105362 | | 65 | 800000000 | 60884 / 194238 |
Estimated T-Level: 61.6 ⓘ TF below 2^200 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | | Unknown | 0281 | 0 | | | Factored | | George Woltman | DA482050E9120281 | 0 | | | Factored | | Brian J. Beesley | DA482050E9120281 | 0 | | | Factored | 2015-04-11 | MadPoo 🙂 | DA482050E9120281 | 367 | Windows 64-bit,Prime95,v26,(aka We4) |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | No proof (small exponent) | 2019-04-13 | matzetoni | 4CEFF35DA7BC80BD | 1 | 724 | 5 | 3 | | Verified | No proof (small exponent) | 2019-04-13 | ATH | 4CEFF35DA7BC80BD | 1 | 270 | 5 | 3 | | Verified | No proof (small exponent) | 2019-04-15 | Ruzovej | 4CEFF35DA7BC80BD | 1 | 0 | 5 | 3 | | Verified | No proof (small exponent) | 2020-04-17 | Oliver Kruse | 4CEFF35DA7BC80BD | 1 | 1833 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-04-05 | masser | NF-PP1 | Start=181/59, B1=4400000000, B2=4395600000000 | | 2020-04-17 | Oliver Kruse | C-PRP | M2377/227428848043888440045045261533777705948742974440394358593 : 4CEFF35DA7BC80BD | | 2019-04-15 | Ruzovej | C-PRP | M2377/227428848043888440045045261533777705948742974440394358593 : 4CEFF35DA7BC80BD | | 2019-04-13 | ATH | C-PRP | M2377/227428848043888440045045261533777705948742974440394358593 : 4CEFF35DA7BC80BD | | 2019-04-13 | matzetoni | C-PRP | M2377/227428848043888440045045261533777705948742974440394358593 : 4CEFF35DA7BC80BD | | 2019-04-13 | Ryan Propper | F-ECM | Factor: 227428848043888440045045261533777705948742974440394358593 | | 2017-12-05 | snme2pm1 | NF | no factor TF: 63-64 | | 2017-02-12 | James Hintz | NF-PM1 | B1=3025470995872, B2=242037679669760, E=12 | | 2016-09-01 | snme2pm1 | NF | no factor TF: 62-63 | | 2016-02-23 | LaurV | NF | no factor TF: 57-58 | | 2015-06-22 | trebor | NF-PM1 | B1=100000000000, B2=10000000000000, E=12 | | 2015-05-29 | snme2pm1 | NF | no factor TF: 61-62 | | 2015-04-11 | MadPoo 🙂 | C-LL | DA482050E9120281 | | 2014-03-03 | BloodIce | NF-PM1 | B1=540000000000 | | 2013-06-25 | BloodIce | NF-PM1 | B1=240000000000 | | 2013-06-19 | BloodIce | NF-PM1 | B1=120000000000 | | 2012-05-22 | bcp19 | NF | no factor TF: 60-61 | | 2011-05-20 | Joss | NF-PM1 | B1=20000000000 | | 2010-12-11 | monst | NF | no factor TF: 58-60 | | 2009-09-23 | James Hintz | NF-PM1 | B1=10000000000, B2=200000000000, E=12 | | 2009-03-23 | klajok | NF-PM1 | B1=4290000000, B2=429000000000, E=12 | | 2005-01-10 | -anonymous- | NF-PM1 | B1=1000000, B2=100000000 | | 2005-01-10 | -anonymous- | NF-PM1 | B1=250000, B2=25000000 | | 2002-12-25 | -anonymous- | NF-PM1 | B1=4290000000 | | 2002-12-02 | Alex Kruppa | NF | no factor TF: 1-57 | | 2002-09-14 | -anonymous- | NF-PM1 | B1=3221225472, B2=4290000000, E=48 | | 2002-08-03 | -anonymous- | NF-PM1 | B1=2147483648, B2=4290000000, E=48 | | 2001-06-03 | -anonymous- | NF-PM1 | B1=3000000000, B2=4290000000 | | 2001-02-11 | -anonymous- | NF-PM1 | B1=1000000, B2=100000000 | | 2000-08-01 | -anonymous- | NF | no factor TF: 1-56 | | 2000-05-05 | -anonymous- | NF | no factor TF: 1-55 | | 2000-01-25 | -anonymous- | NF | no factor TF: 54-55 | | 1999-12-15 | -anonymous- | NF | no factor TF: 53-54 | | 1999-09-22 | -anonymous- | NF | no factor TF: 52-53 | | 1999-09-14 | -anonymous- | NF | no factor TF: 50-51 | | 1998-07-05 | -anonymous- | NF | no factor TF: 50-52 |
|
