| 1152121 | Composite, with 2 known prime factors. Cofactor is composite. Trial Factored to 268 TF target 260 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 280 / 280 | | 30 | 250000 | 100 / 640 |
Estimated T-Level: 25.8 ⓘ TF below 2^81 is very unlikely to find new factors due to ECM effort. |
| PRP | | Status | Proof | Date | User | Residue | Shift | Type | Base |
|---|
| Factored | Certified Good Power=6 | 2025-09-01 | Kriesel | B6D9A0D9F7E1EAB2 | 0 | 1 | 3 |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Factored | PRP without proof (not generated) | 2017-09-29 | Oliver Kruse | 7EAA61E39517C304 | 1 | 0 | 1 | 3 | | Factored | PRP without proof (not generated) | 2017-10-17 | Oliver Kruse | 7EAA61E39517C304 | 1 | 749610 | 1 | 3 | | Factored | PRP without proof (not generated) | 2018-01-02 | ATH | 7EAA61E39517C304 | 1 | 487037 | 1 | 3 | | Verified | PRP without proof (not generated) | 2018-04-29 | Oliver Kruse | B6D9A0D9F7E1EAB2 | 2 | 943617 | 5 | 3 | | Verified | PRP without proof (not generated) | 2018-05-01 | storm5510 | B6D9A0D9F7E1EAB2 | 2 | 65669 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-09-02 | BUROMIECZ | CERT | Proof certified good | | 2025-09-01 | Kriesel | C-PRP | B6D9A0D9F7E1EAB2 Proof Certified Good
Proof Power: 6
| | 2025-04-21 | alex4 | NF-PM1 | B1=1920000, B2=61358617320 | | 2018-05-01 | storm5510 | C-PRP | M1152121/716619263/5817103705790455360697 : B6D9A0D9F7E1EAB2 | | 2018-04-29 | Oliver Kruse | C-PRP | M1152121/716619263/5817103705790455360697 : B6D9A0D9F7E1EAB2 | | 2018-04-27 | TJAOI | F-ECM | Factor: 5817103705790455360697 | | 2018-01-02 | ATH | C-PRP | M1152121/716619263 : 7EAA61E39517C304 | | 2017-10-17 | Oliver Kruse | C-PRP | M1152121/716619263 : 7EAA61E39517C304 | | 2017-09-29 | Oliver Kruse | C-PRP | M1152121/716619263 : 7EAA61E39517C304 | | 2016-03-17 | alpertron | NF-PM1 | B1=300000, B2=10000000, E=12 |
|
