| 2490101 | Composite, with 2 known prime factors. Cofactor is composite. Trial Factored to 268 TF target 263 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 134 / 280 |
Estimated T-Level: 22.4 ⓘ TF below 2^69 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | | Kevin Panko | 01E5256312754EF5 | 0 | Windows,Prime95,v14,(aka WQ1) | | Factored | 1999-05-16 | Tim Borland | 01E5256312754EF5 | 1475091 | Windows,Prime95,v17,(aka WT1) |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Factored | PRP without proof (not generated) | 2017-10-14 | Oliver Kruse | BC80AAE9289847BA | 1 | 1297558 | 5 | 3 | | Factored | PRP without proof (not generated) | 2017-11-30 | storm5510 | BC80AAE9289847BA | 1 | 1158892 | 5 | 3 | | Verified | Certified Good | 2025-05-25 | atk80230 | BC80AAE9289847BA | 2 | 1271962 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-05-25 | Fabrice Bellet | CERT | Proof certified good | | 2025-05-25 | atk80230 | C-PRP | M2490101/3181516541810049479/105458636184417834776329 : BC80AAE9289847BA Proof Certified Good
Proof Power: 7
| | 2025-05-20 | debrouxl | F-ECM | Factor: 105458636184417834776329 / ECM curve 1, B1=67884, B2=10046832, Montgomery Sigma=4031525316651407 | | 2022-03-10 | LordJulius | NF | no factor TF: 1-60 | | 2019-07-04 | alpertron | NF-PM1 | B1=2000000, B2=60000000, E=12 | | 2017-11-30 | storm5510 | C-PRP | M2490101/3181516541810049479 : BC80AAE9289847BA | | 2017-10-14 | Oliver Kruse | C-PRP | M2490101/3181516541810049479 : BC80AAE9289847BA | | 2010-04-02 | Wolfgang Fluck | F-ECM | Factor: 3181516541810049479 | | 2009-01-15 | Sturle Sunde | NF | no factor TF: 60-61 | | 2003-10-31 | Team Prime Rib | NF-PM1 | B1=15000, B2=228750 | | 2003-10-23 | -anonymous- | NF-PM1 | B1=2048, B2=204800 | | 1999-05-16 | -anonymous- | C-LL | 01E5256312754EF5 | | 1999-05-02 | -anonymous- | NF | no factor TF: 1-59 |
|
