| 10541719 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 268 TF target 268 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 66 / 280 |
Estimated T-Level: 21.2 ⓘ TF below 2^65 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | 2000-11-25 | INTERSHOP Communications | 902B1CC878AF45F0 | 0 | Windows,Prime95,v16,NT service,(aka WS5) | | Factored | 2004-01-18 | Paul Victor Novarese | 902B1CC878AF45F0 | 6125436 | Linux 32-bit,Prime95,v22,(aka WY2) |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | Certified Good | 2026-08-14 | linament | 0FCDEA38554BE700 | 1 | 630978 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2026-08-14 | BA24Cx | CERT | Proof certified good | | 2026-08-14 | linament | C-PRP | Proof Certified Good
Proof Power: 8
| | 2026-08-14 | linament | F-ECM | Factor: 52972367133576266347513 / ECM curve 7, B1=200000, B2=643227585, Edwards Sigma=3172049308141863 | | 2026-07-18 | axn | NF-PM1 | B1=12000000, B2=71219644650 | | 2024-11-18 | Jason Lynch | NF-PM1 | B1=6635000, B2=47936075460 | | 2022-02-03 | Zhang Ruichong | NF-PM1 | B1=581000, B2=257134020 | | 2021-12-31 | -anonymous- | NF | no factor TF: 72-73 | | 2021-10-26 | SRBase | NF | no factor TF: 71-72 | | 2021-08-12 | SRBase | NF | no factor TF: 70-71 | | 2020-08-16 | ViliamF | NF | no factor TF: 69-70 | | 2017-12-12 | ramgeis | NF | no factor TF: 68-69 | | 2017-12-12 | ramgeis | NF | no factor TF: 67-68 | | 2015-11-14 | VictordeHollander | NF | no factor TF: 66-67 | | 2015-05-06 | Tha | NF | no factor TF: 65-66 | | 2013-12-18 | lycorn | NF | no factor TF: 64-65 | | 2013-07-24 | Nesowa | NF-PM1 | B1=130000, B2=2600000, E=6 | | 2004-01-18 | -anonymous- | C-LL | 902B1CC878AF45F0 | | 2003-12-02 | -anonymous- | NF-PM1 | B1=60000, B2=900000 | | 2000-11-25 | netconx | C-LL | 902B1CC878AF45F0 | | 1999-12-01 | -anonymous- | NF | no factor TF: 1-64 |
|
Mismatched No-Factors-Below TF level auto-fixed, will show 73 (not 68) on page refresh.
