| 2316571 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 268 TF target 262 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 280 / 280 | | 30 | 250000 | 117 / 640 |
Estimated T-Level: 25.9 ⓘ TF below 2^81 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | 1998-02-08 | Joop Duijn | BC845564A370C3F4 | 0 | Windows,Prime95,v15,(aka WR1) | | Factored | 1999-08-31 | Lou Giacalone | BC845564A370C3F4 | 2283230 | Windows,Prime95,v18,NT service,(aka WU5) |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | PRP without proof (not generated) | 2017-10-11 | Oliver Kruse | 1F3EA30358B898CD | 1 | 0 | 1 | 3 | | Verified | PRP without proof (not generated) | 2017-11-23 | storm5510 | 1F3EA30358B898CD | 1 | 1168668 | 1 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2021-04-05 | ViliamF | NF-PM1 | B1=5000000, B2=505000000 | | 2018-02-26 | alpertron | NF-PM1 | B1=500000, B2=15000000, E=12 | | 2017-11-23 | storm5510 | C-PRP | M2316571/1297295555900748577 : 1F3EA30358B898CD | | 2017-10-11 | Oliver Kruse | C-PRP | M2316571/1297295555900748577 : 1F3EA30358B898CD | | 2009-01-13 | Sturle Sunde | F | Factor: 1297295555900748577 | | 2003-09-14 | -anonymous- | NF-PM1 | B1=2048, B2=204800 | | 1999-08-31 | -anonymous- | C-LL | BC845564A370C3F4 | | 1998-02-08 | -anonymous- | C-LL | BC845564A370C3F4 |
|
