| 2267807 | 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 | 138 / 640 |
Estimated T-Level: 26.1 ⓘ TF below 2^82 is very unlikely to find new factors due to ECM effort. |
| PRP | | Status | Proof | Date | User | Residue | Shift | Type | Base |
|---|
| Factored | Certified Good Power=7 | 2025-12-23 | VGDominion | 992FE930E466EC6D | 0 | 1 | 3 |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Factored | PRP without proof (not generated) | 2017-10-10 | Oliver Kruse | 544402E538D4A88C | 1 | 0 | 1 | 3 | | Factored | PRP without proof (not generated) | 2017-11-21 | storm5510 | 544402E538D4A88C | 1 | 1193082 | 1 | 3 | | Verified | Certified Good | 2026-01-29 | kkmrkkblmbrbk | 992FE930E466EC6D | 2 | 751892 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2026-01-29 | pilot no more | CERT | Proof certified good | | 2026-01-29 | kkmrkkblmbrbk | C-PRP | M2267807/135243757894934024446687457/7042742672711 : 992FE930E466EC6D Proof Certified Good
Proof Power: 7
| | 2025-12-23 | matgaj | CERT | Proof certified good | | 2025-12-23 | VGDominion | C-PRP | 992FE930E466EC6D Proof Certified Good
Proof Power: 7
| | 2025-12-18 | TJAOI | F-ECM | Factor: 135243757894934024446687457 / ECM curve 23, B1=250000, B2=252249855, Edwards Sigma=3717032438810324 | | 2017-11-21 | storm5510 | C-PRP | M2267807/7042742672711 : 544402E538D4A88C | | 2017-10-10 | Oliver Kruse | C-PRP | M2267807/7042742672711 : 544402E538D4A88C | | 2016-04-24 | alpertron | NF-PM1 | B1=500000, B2=15000000, E=12 |
|
