| 7626721 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 269 TF target 267 |
| Factored | |
| P-1 factors | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 6 / 280 |
Estimated T-Level: 20.1 ⓘ TF below 2^62 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | 1999-10-21 | YatHong Yu | 045A04C7375A449E | 7084284 | Windows,Prime95,v18,(aka WU1) | | Factored | 2002-06-29 | Robin Stevens | 045A04C7375A449E | 3185667 | Linux 32-bit,Prime95,v21,(aka WX2) |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | PRP without proof (not generated) | 2020-05-08 | Klaus Nordmann | B200D052F704F0F9 | 1 | 7599476 | 5 | 3 | | Verified | PRP without proof (not generated) | 2020-05-08 | Oliver Kruse | B200D052F704F0F9 | 1 | 4519597 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2020-05-08 | Oliver Kruse | C-PRP | M7626721/4578589788025462739399 : B200D052F704F0F9 | | 2020-05-08 | Klaus Nordmann | C-PRP | M7626721/4578589788025462739399 : B200D052F704F0F9 | | 2020-05-07 | Tha | F-PM1 | Factor: 4578589788025462739399 / B1=1000000, B2=20000000 | | 2020-03-13 | TJAOI | NF | no factor TF: 68-69 | | 2018-07-31 | ramgeis | NF | no factor TF: 67-68 | | 2016-09-14 | Gordon Spence | NF | no factor TF: 66-67 | | 2015-06-09 | VictordeHollander | NF | no factor TF: 65-66 | | 2013-12-06 | David Campeau | NF | no factor TF: 64-65 | | 2013-10-11 | Nesowa | NF | no factor TF: 63-64 | | 2012-07-21 | Nesowa | NF-PM1 | B1=95000, B2=1757500, E=6 | | 2002-06-29 | -anonymous- | C-LL | 045A04C7375A449E | | 2002-03-03 | -anonymous- | NF-PM1 | B1=40000, B2=510000 | | 1999-10-21 | Peter Yu | C-LL | 045A04C7375A449E | | 1998-08-16 | -anonymous- | NF | no factor TF: 1-63 | | 1998-08-09 | delong | NF | no factor TF: 1-62 |
|
