| 2361071 | Composite, with 2 known prime factors. Cofactor is composite. Trial Factored to 268 TF target 263 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 280 / 280 | | 30 | 250000 | 142 / 640 |
Estimated T-Level: 26.1 ⓘ 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) | 2017-10-12 | Oliver Kruse | 508A8CF0CFE3DC2D | 1 | 1792849 | 5 | 3 | | Factored | PRP without proof (not generated) | 2017-11-24 | storm5510 | 508A8CF0CFE3DC2D | 1 | 709746 | 5 | 3 | | Verified | Certified Good | 2026-02-13 | feather | 508A8CF0CFE3DC2D | 2 | 1209801 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2026-02-13 | jkaluza | CERT | Proof certified good | | 2026-02-13 | TJAOI | F-ECM | Factor: 1503954728442873984023 / ECM curve 20, B1=250000, B2=252173985, Edwards Sigma=5640234376501 | | 2026-02-13 | feather | C-PRP | M2361071/59677434224039/1503954728442873984023 : 508A8CF0CFE3DC2D Proof Certified Good
Proof Power: 7
| | 2026-02-13 | feather | F-ECM | Factor: 1503954728442873984023 / ECM curve 35, B1=108059, B2=7760550, Edwards Sigma=2058697498899973 | | 2018-04-27 | alpertron | NF-PM1 | B1=2000000, B2=60000000, E=12 | | 2017-11-24 | storm5510 | C-PRP | M2361071/59677434224039 : 508A8CF0CFE3DC2D | | 2017-10-12 | Oliver Kruse | C-PRP | M2361071/59677434224039 : 508A8CF0CFE3DC2D |
|
