| 2320961 | 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 | 124 / 640 |
Estimated T-Level: 26.0 ⓘ TF below 2^81 is very unlikely to find new factors due to ECM effort. |
| 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 | AC4D66A9DDEF3A11 | 1 | 0 | 1 | 3 | | Factored | PRP without proof (not generated) | 2017-11-23 | storm5510 | AC4D66A9DDEF3A11 | 1 | 211952 | 1 | 3 | | Verified | Certified Good | 2026-01-03 | Tio-Cash | 86B602F7F8548752 | 2 | 866260 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2026-01-03 | Chuck | CERT | Proof certified good | | 2026-01-03 | Tio-Cash | C-PRP | M2320961/143899583/5505012529288104884903 : 86B602F7F8548752 Proof Certified Good
Proof Power: 7
| | 2025-12-18 | TJAOI | F-ECM | Factor: 5505012529288104884903 / ECM curve 16, B1=250000, B2=254050335, Edwards Sigma=5139741801814169 | | 2021-04-10 | ViliamF | NF-PM1 | B1=5000000, B2=505000000 | | 2018-03-05 | alpertron | NF-PM1 | B1=500000, B2=15000000, E=12 | | 2017-11-23 | storm5510 | C-PRP | M2320961/143899583 : AC4D66A9DDEF3A11 | | 2017-10-11 | Oliver Kruse | C-PRP | M2320961/143899583 : AC4D66A9DDEF3A11 |
|
