| 2264183 | 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 | 148 / 640 |
Estimated T-Level: 26.2 ⓘ TF below 2^82 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 | 138F0C8921217654 | 1 | 0 | 1 | 3 | | Factored | PRP without proof (not generated) | 2017-11-21 | storm5510 | 138F0C8921217654 | 1 | 2145450 | 1 | 3 | | Verified | Certified Good | 2022-07-18 | Wentao Huang | 6628783CE41E94B7 | 2 | 1140683 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2022-07-18 | gregor_krannich | CERT | Proof certified good | | 2022-07-18 | Wentao Huang | C-PRP | M2264183/4528367/1271783159916018777631657 : 6628783CE41E94B7 Proof Certified Good
Proof Power: 7
| | 2022-07-13 | debrouxl | F-ECM | Factor: 1271783159916018777631657 / ECM curve 2, B1=50000, B2=6500000, Montgomery Sigma=5906057001351825 | | 2017-11-21 | storm5510 | C-PRP | M2264183/4528367 : 138F0C8921217654 | | 2017-10-11 | Oliver Kruse | C-PRP | M2264183/4528367 : 138F0C8921217654 | | 2016-04-20 | alpertron | NF-PM1 | B1=500000, B2=15000000, E=12 |
|
