| 2300173 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 268 TF target 262 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 280 / 280 | | 30 | 250000 | 160 / 640 |
Estimated T-Level: 26.3 ⓘ TF below 2^82 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | | Stephen Wood | BE1762842891E86D | 0 | Mlucas,Ernst Mayer,v2.5 and later,(aka E2) | | Factored | 1997-11-12 | Chad Davis | BE1762842891E86D | 0 | Windows,Prime95,v14,(aka WQ1) |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | PRP without proof (not generated) | 2017-10-11 | Oliver Kruse | CFCD423F62CA96B8 | 1 | 0 | 1 | 3 | | Verified | PRP without proof (not generated) | 2017-11-22 | storm5510 | CFCD423F62CA96B8 | 1 | 1291258 | 1 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2021-04-26 | Dylan Delgado | NF-PP1 | Start=2/7, B1=2000000, B2=146000000 | | 2021-04-03 | ViliamF | NF-PM1 | B1=5000000, B2=500000000 | | 2017-11-22 | storm5510 | C-PRP | M2300173/13151975578266510409313 : CFCD423F62CA96B8 | | 2017-10-11 | Oliver Kruse | C-PRP | M2300173/13151975578266510409313 : CFCD423F62CA96B8 | | 2010-02-12 | Bud | F-PM1 | Factor: 13151975578266510409313 | | 2009-01-15 | Sturle Sunde | NF | no factor TF: 60-61 | | 2003-08-08 | -anonymous- | NF-PM1 | B1=2048, B2=204800 | | 1997-11-12 | -anonymous- | C-LL | BE1762842891E86D |
|
