| 2304893 | Composite, with 2 known prime factors. Cofactor is composite. Trial Factored to 268 TF target 262 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 280 / 280 | | 30 | 250000 | 125 / 640 |
Estimated T-Level: 26.0 ⓘ TF below 2^81 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | | Joe Decker | 61E836EFD814CC06 | 0 | Windows,Prime95,v14,(aka WQ1) | | Factored | 1999-06-06 | paul wolf | 61E836EFD814CC06 | 2264483 | Windows,Prime95,v18,(aka WU1) |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Factored | PRP without proof (not generated) | 2017-10-11 | Oliver Kruse | 50F9BAD25CEBBB54 | 1 | 0 | 1 | 3 | | Factored | PRP without proof (not generated) | 2017-11-22 | storm5510 | 50F9BAD25CEBBB54 | 1 | 2092081 | 1 | 3 | | Verified | Certified Good | 2025-10-27 | DanB | 754C9B857A51F444 | 2 | 1599594 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-10-27 | Stephan Grupp | CERT | Proof certified good | | 2025-10-27 | DanB | C-PRP | M2304893/1937463782363875640209033/3772177441729719334032943 : 754C9B857A51F444 Proof Certified Good
Proof Power: 7
| | 2025-10-21 | TJAOI | F-ECM | Factor: 1937463782363875640209033 / ECM curve 13, B1=250000, B2=251325195, Edwards Sigma=5130669854965532 | | 2021-06-10 | ViliamF | NF-PM1 | B1=5000000, B2=505000000 | | 2018-02-18 | alpertron | NF-PM1 | B1=500000, B2=15000000, E=12 | | 2017-11-22 | storm5510 | C-PRP | M2304893/3772177441729719334032943 : 50F9BAD25CEBBB54 | | 2017-10-11 | Oliver Kruse | C-PRP | M2304893/3772177441729719334032943 : 50F9BAD25CEBBB54 | | 2009-01-27 | Nathan Slaven | F-ECM | Factor: 3772177441729719334032943 | | 2009-01-15 | Sturle Sunde | NF | no factor TF: 60-61 | | 2003-09-14 | -anonymous- | NF-PM1 | B1=2048, B2=204800 | | 1999-06-06 | -anonymous- | C-LL | 61E836EFD814CC06 |
|
