| 8320853 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 269 TF target 268 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 3 / 280 |
Estimated T-Level: 20.1 ⓘ TF below 2^62 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | 1999-12-01 | John Hamm | F1D39775EF0E5058 | 0 | Windows,Prime95,v16,(aka WS1) | | Factored | 2003-02-09 | Rich Stafford | F1D39775EF0E5058 | 186090 | Windows,Prime95,v21,(aka WX1) |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | PRP without proof (not generated) | 2019-12-01 | mnd9 | 9B1B5037472B1A2C | 1 | 332471 | 5 | 3 | | Verified | PRP without proof (not generated) | 2020-04-21 | Team_Inspector | 9B1B5037472B1A2C | 1 | 4523813 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-03-14 | beep | NF-PM1 | B1=1750000, B2=6798611820 | | 2020-04-21 | Team_Inspector | C-PRP | M8320853/441503528638656090023 : 9B1B5037472B1A2C | | 2019-12-01 | mnd9 | C-PRP | M8320853/441503528638656090023 : 9B1B5037472B1A2C | | 2019-11-30 | mnd9 | F | Factor: 441503528638656090023 / TF: 68-69 | | 2018-01-12 | monst | NF | no factor TF: 67-68 | | 2015-12-26 | snme2pm1 | NF | no factor TF: 66-67 | | 2015-05-28 | VictordeHollander | NF | no factor TF: 65-66 | | 2014-01-06 | David Campeau | NF | no factor TF: 64-65 | | 2012-01-13 | kurly | NF-PM1 | B1=95000, B2=1662500, E=6 | | 2003-02-09 | -anonymous- | C-LL | F1D39775EF0E5058 | | 2002-09-29 | -anonymous- | NF-PM1 | B1=35000, B2=271250 | | 2002-09-29 | -anonymous- | NF | no factor TF: 1-64 | | 1999-12-01 | -anonymous- | C-LL | F1D39775EF0E5058 | | 1998-10-04 | -anonymous- | NF | no factor TF: 1-63 | | 1998-09-20 | Ethan O'Connor | NF | no factor TF: 1-62 |
|
