| 2588753 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 268 TF target 263 |
| Factored | |
| P-1 factors | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 122 / 280 |
Estimated T-Level: 22.2 ⓘ TF below 2^69 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | | Thomas Honold | D44424DAE0FD7423 | 0 | Linux 32-bit,Prime95,v14,(aka WQ2) | | Factored | 1999-03-26 | Alan Frederick | D44424DAE0FD7423 | 1233393 | Windows,Prime95,v17,(aka WT1) |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | PRP without proof (not generated) | 2017-10-15 | Oliver Kruse | 811A8450A24CF7C0 | 1 | 382109 | 5 | 3 | | Verified | PRP without proof (not generated) | 2017-12-02 | storm5510 | 811A8450A24CF7C0 | 1 | 254221 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2019-07-04 | alpertron | NF-PM1 | B1=2000000, B2=60000000, E=12 | | 2017-12-02 | storm5510 | C-PRP | M2588753/25365396487879471541137460826049 : 811A8450A24CF7C0 | | 2017-10-15 | Oliver Kruse | C-PRP | M2588753/25365396487879471541137460826049 : 811A8450A24CF7C0 | | 2016-08-12 | mikr | F-PM1 | Factor: 25365396487879471541137460826049 / B1=3200000, B2=112000000 | | 2016-02-23 | Mark Rose | NF | no factor TF: 59-60 | | 2015-11-06 | ramgeis | NF | no factor TF: 65-66 | | 2015-02-27 | VictordeHollander | NF | no factor TF: 64-65 | | 2015-02-27 | VictordeHollander | NF | no factor TF: 63-64 | | 2013-01-14 | dbaugh | NF | no factor TF: 62-63 | | 2012-06-22 | Sebastian Hornbostel | NF | no factor TF: 61-62 | | 2011-10-14 | markr | NF-PM1 | B1=175000, B2=4112500, E=6 | | 2011-01-13 | Joss | NF-PM1 | B1=50000 | | 2010-11-15 | Joss | NF-PM1 | B1=20000 | | 2009-01-31 | Sturle Sunde | NF | no factor TF: 60-61 | | 2003-11-08 | Team Prime Rib | NF-PM1 | B1=15000, B2=206250 | | 2003-10-31 | -anonymous- | NF-PM1 | B1=2048, B2=204800 | | 1999-04-13 | -anonymous- | NF | no factor TF: 1-59 | | 1999-04-13 | -anonymous- | C-LL | D44424DAE0FD7423 | | 1999-03-26 | -anonymous- | C-LL | D44424DAE0FD7423 | | 1999-03-26 | -anonymous- | NF | no factor TF: 1-59 |
|
