| 8403121 | Composite, with 4 known prime factors. Cofactor is composite. Trial Factored to 268 TF target 268 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 88 / 280 |
Estimated T-Level: 21.6 ⓘ TF below 2^67 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) | 2018-10-23 | rucio | 9D4ADCFA544FBDD3 | 3 | 50945 | 5 | 3 | | Factored | PRP without proof (not generated) | 2020-05-18 | ATH | 9D4ADCFA544FBDD3 | 3 | 6279958 | 5 | 3 | | Verified | Certified Good | 2022-03-20 | riccardo uberti | 9D4ADCFA544FBDD3 | 4 | 425622 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2022-04-01 | riccardo uberti | NF-PP1 | Start=6/5, B1=3450000, B2=72000000 | | 2022-03-28 | riccardo uberti | NF-PP1 | Start=2/7, B1=3000000, B2=60000000 | | 2022-03-21 | riccardo uberti | NF-PM1 | B1=3000000, B2=121809930 | | 2022-03-21 | FreeTibet | CERT | Proof certified good | | 2022-03-20 | riccardo uberti | C-PRP | M8403121/25394231663/264799148953/376598573133953/180079977461621635649 : 9D4ADCFA544FBDD3 Proof Certified Good
Proof Power: 8
| | 2022-03-14 | TJAOI | F | Factor: 180079977461621635649 | | 2020-05-18 | ATH | C-PRP | M8403121/25394231663/264799148953/376598573133953 : 9D4ADCFA544FBDD3 | | 2018-10-23 | rucio | C-PRP | M8403121/25394231663/264799148953/376598573133953 : 9D4ADCFA544FBDD3 | | 2014-04-03 | TJAOI | F | Factor: 376598573133953 | | 2008-09-08 | Will Edgington | F | Factor: 264799148953 |
|
