| 2613187 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 268 TF target 263 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 108 / 280 |
Estimated T-Level: 21.9 ⓘ TF below 2^68 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | | Mike Peterson | B85DB698B643D46A | 0 | Windows,Prime95,v13,(aka WP1) | | Factored | 1999-09-30 | Roy Oswald | B85DB698B643D46A | 1859266 | 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) | 2017-10-18 | Oliver Kruse | 268B9DA16A757BB8 | 1 | 1710551 | 5 | 3 | | Verified | PRP without proof (not generated) | 2017-12-02 | storm5510 | 268B9DA16A757BB8 | 1 | 251555 | 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 | M2613187/969563279542110453839 : 268B9DA16A757BB8 | | 2017-10-18 | Oliver Kruse | C-PRP | M2613187/969563279542110453839 : 268B9DA16A757BB8 | | 2003-11-08 | Team Prime Rib | F-PM1 | Factor: 969563279542110453839 | | 2003-10-31 | -anonymous- | F-PM1 | Factor: 969563279542110453839 | | 1999-09-30 | Roy Oswald | C-LL | B85DB698B643D46A | | 1999-09-30 | Roy Oswald | NF | no factor TF: 1-59 | | 1999-04-02 | Roy Oswald | C-LL | B85DB698B643D46A | | 1999-03-26 | Roy Oswald | NF | no factor TF: 1-59 |
|
