| 8613757 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 268 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 | Grant Milne | 623A66591C563AE1 | 7219838 | Windows,Prime95,v19,(aka WV1) | | Factored | 2002-11-24 | Brian J. Beesley | 623A66591C563AE1 | 2121959 | Linux 32-bit,Prime95,v22,(aka WY2) |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | PRP without proof (not generated) | 2018-12-02 | rucio | C361A574C13ED230 | 1 | 2065429 | 5 | 3 | | Verified | PRP without proof (not generated) | 2020-08-06 | pew | C361A574C13ED230 | 1 | 1122128 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-05-02 | beep | NF-PM1 | B1=1900000, B2=10259428410 | | 2020-08-06 | pew | C-PRP | M8613757/7910663198788115687 : C361A574C13ED230 | | 2018-12-02 | rucio | C-PRP | M8613757/7910663198788115687 : C361A574C13ED230 | | 2016-03-08 | TJAOI | F | Factor: 7910663198788115687 | | 2016-02-02 | snme2pm1 | NF | no factor TF: 66-67 | | 2015-05-25 | VictordeHollander | NF | no factor TF: 65-66 | | 2013-11-04 | David Campeau | NF | no factor TF: 64-65 | | 2012-02-23 | bcp19 | NF-PM1 | B1=100000, B2=1825000, E=6 | | 2002-11-24 | -anonymous- | C-LL | 623A66591C563AE1 | | 2002-11-09 | -anonymous- | NF-PM1 | B1=45000, B2=540000 | | 1999-12-01 | -anonymous- | C-LL | 623A66591C563AE1 | | 1999-10-15 | -anonymous- | NF | no factor TF: 1-64 | | 1998-10-29 | -anonymous- | NF | no factor TF: 1-63 | | 1998-10-11 | -anonymous- | NF | no factor TF: 1-61 |
|
