| 2553409 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 268 TF target 263 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 102 / 280 |
Estimated T-Level: 21.8 ⓘ TF below 2^67 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | | Matthew Tomlinson | 363FD0DE2CE8A35C | 0 | Windows,Prime95,v13,NT service,(aka WP5) | | Factored | | matt thomlinson | 363FD0DE2CE8A35C | 0 | Windows,Prime95,v13,NT service,(aka WP5) | | Factored | 1999-04-13 | C. Cooper / S. Boone | 363FD0DE2CE8A35C | 386857 | Linux 32-bit,Prime95,v18,(aka WU2) |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | PRP without proof (not generated) | 2017-10-14 | Oliver Kruse | 246B068D4B78F067 | 1 | 2316489 | 5 | 3 | | Verified | PRP without proof (not generated) | 2017-12-01 | storm5510 | 246B068D4B78F067 | 1 | 577529 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2019-07-04 | alpertron | NF-PM1 | B1=2000000, B2=60000000, E=12 | | 2017-12-01 | storm5510 | C-PRP | M2553409/30795319402405861591 : 246B068D4B78F067 | | 2017-10-14 | Oliver Kruse | C-PRP | M2553409/30795319402405861591 : 246B068D4B78F067 | | 2003-11-08 | Team Prime Rib | F-PM1 | Factor: 30795319402405861591 | | 2003-10-23 | -anonymous- | NF-PM1 | B1=2048, B2=204800 | | 1999-04-13 | curtisc | C-LL | 363FD0DE2CE8A35C | | 1999-03-15 | curtisc | NF | no factor TF: 1-59 |
|
