| 7613251 | 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 | 1999-07-04 | Matt Fischer | 20AC5D0800122A72 | 3234120 | Linux 32-bit,Prime95,v18,(aka WU2) | | Factored | 2002-04-20 | Marco Pirini | 20AC5D0800122A72 | 3526184 | Windows,Prime95,v21,(aka WX1) |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | PRP without proof (not generated) | 2020-05-05 | mrh | 2716B24D0EED64C1 | 1 | 6457263 | 5 | 3 | | Verified | PRP without proof (not generated) | 2020-05-07 | marssystems | 2716B24D0EED64C1 | 1 | 780791 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2020-05-07 | marssystems | C-PRP | M7613251/13568844288737511996832930996783 : 2716B24D0EED64C1 | | 2020-05-05 | mrh | C-PRP | M7613251/13568844288737511996832930996783 : 2716B24D0EED64C1 | | 2020-05-05 | Tha | F-PM1 | Factor: 13568844288737511996832930996783 / B1=1000000, B2=20000000 | | 2020-03-20 | TJAOI | NF | no factor TF: 68-69 | | 2018-07-31 | ramgeis | NF | no factor TF: 67-68 | | 2016-09-13 | Gordon Spence | NF | no factor TF: 66-67 | | 2015-06-09 | VictordeHollander | NF | no factor TF: 65-66 | | 2013-12-04 | David Campeau | NF | no factor TF: 64-65 | | 2013-10-11 | Nesowa | NF | no factor TF: 63-64 | | 2012-07-19 | Nesowa | NF-PM1 | B1=95000, B2=1757500, E=6 | | 2002-04-20 | -anonymous- | C-LL | 20AC5D0800122A72 | | 2002-03-10 | -anonymous- | NF-PM1 | B1=40000, B2=540000 | | 1999-07-04 | ANONYMOUS | C-LL | 20AC5D0800122A72 | | 1998-11-14 | -anonymous- | NF | no factor TF: 1-63 | | 1998-07-29 | -anonymous- | NF | no factor TF: 1-61 |
|
