| 8307251 | Composite, with 2 known prime factors. Cofactor is composite. Trial Factored to 268 TF target 268 |
| Factored | |
| P-1 factors | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 3 / 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 | Jeff Mack | 177A2ACA886540DE | 714287 | Windows,Prime95,v19,(aka WV1) | | Factored | 2002-08-31 | Matt Perry | 177A2ACA886540DE | 8271263 | Windows,Prime95,v21,(aka WX1) |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Factored | PRP without proof (not generated) | 2018-10-09 | -anonymous- | 7543601012813FB1 | 1 | 4237595 | 5 | 3 | | Factored | PRP without proof (not generated) | 2020-04-18 | GAN | 7543601012813FB1 | 1 | 4230265 | 5 | 3 | | Verified | Certified Good | 2025-03-14 | beep | 7543601012813FB1 | 2 | 3601380 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-03-14 | Strobofant | CERT | Proof certified good | | 2025-03-14 | beep | C-PRP | M8307251/129100315853367702793/1050932558542776793031 : 7543601012813FB1 Proof Certified Good
Proof Power: 8
| | 2025-03-14 | beep | F-PM1 | Factor: 1050932558542776793031 / B1=1750000, B2=6798611820 | | 2020-04-18 | GAN | C-PRP | M8307251/129100315853367702793 : 7543601012813FB1 | | 2018-10-09 | -anonymous- | C-PRP | M8307251/129100315853367702793 : 7543601012813FB1 | | 2015-12-22 | snme2pm1 | F | Factor: 129100315853367702793 / TF: 66-67* | | 2015-05-28 | VictordeHollander | NF | no factor TF: 65-66 | | 2014-01-06 | David Campeau | NF | no factor TF: 64-65 | | 2012-07-29 | firejuggler | NF-PM1 | B1=95000, B2=1662500, E=6 | | 2002-08-31 | Matt Perry | NF | no factor TF: 1-64 | | 2002-08-31 | Matt Perry | C-LL | 177A2ACA886540DE | | 2002-08-31 | Matt Perry | NF-PM1 | B1=40000, B2=640000 | | 1999-10-21 | -anonymous- | C-LL | 177A2ACA886540DE | | 1998-12-13 | Trent Taufer | NF | no factor TF: 1-63 | | 1998-10-11 | -anonymous- | NF | no factor TF: 1-62 | | 1998-09-06 | Mark D | NF | no factor TF: 1-61 |
|
