| 18521411 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 269 TF target 269 |
| Factored | |
| P-1 factors | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 1 / 280 |
Estimated T-Level: 20.0 ⓘ TF below 2^61 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | 2003-05-11 | W. Brisken / M. Nolta | 06B8DFF345AD365C | 1638771 | Linux 32-bit,Prime95,v21,(aka WX2) | | Factored | 2007-01-01 | Jan Wagner | 06B8DFF345AD365C | 4006959 | Windows,Prime95,v24 final,(aka Wc1) |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | Certified Good | 2026-01-13 | mrh | 5DCA151D53641047 | 1 | 6258973 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2026-01-13 | tactus tenebris | CERT | Proof certified good | | 2026-01-13 | mrh | C-PRP | M18521411/165718901219828172167153 : 5DCA151D53641047 Proof Certified Good
Proof Power: 8
| | 2019-02-23 | USAFSS | F-PM1 | Factor: 165718901219828172167153 / B1=330000, B2=8745000 | | 2018-01-24 | ramgeis | NF | no factor TF: 67-68 | | 2018-01-24 | ramgeis | NF | no factor TF: 68-69 | | 2016-03-25 | Mark Rose | NF | no factor TF: 66-67 | | 2007-01-01 | -anonymous- | C-LL | 06B8DFF345AD365C | | 2003-05-11 | -anonymous- | C-LL | 06B8DFF345AD365C | | 2003-03-27 | -anonymous- | NF-PM1 | B1=270000, B2=270000 | | 2002-04-20 | Remote009 | NF | no factor TF: 1-66 | | 2001-12-01 | Net_Force | NF | no factor TF: 1-59 | | 2001-10-27 | Net_Force | NF | no factor TF: 1-58 |
|
