| 2304637 | 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 | 128 / 640 |
Estimated T-Level: 26.0 ⓘ TF below 2^81 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | 1998-02-19 | Alex Kok | 856EC3505CD747F5 | 0 | Windows,Prime95,v14,(aka WQ1) | | Factored | 1999-06-15 | Ola Svallmark | 856EC3505CD747F5 | 2078637 | Windows,Prime95,v18,(aka WU1) |
|
| 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 | 9B0781742A133574 | 1 | 0 | 1 | 3 | | Verified | PRP without proof (not generated) | 2017-11-22 | storm5510 | 9B0781742A133574 | 1 | 1658087 | 1 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2022-03-09 | LordJulius | NF | no factor TF: 1-60 | | 2021-06-09 | ViliamF | NF-PM1 | B1=5000000, B2=505000000 | | 2018-02-18 | alpertron | NF-PM1 | B1=500000, B2=15000000, E=12 | | 2017-11-22 | storm5510 | C-PRP | M2304637/2607615515259836383 : 9B0781742A133574 | | 2017-10-11 | Oliver Kruse | C-PRP | M2304637/2607615515259836383 : 9B0781742A133574 | | 2009-09-05 | James Hintz | F-ECM | Factor: 2607615515259836383 | | 2009-01-15 | Sturle Sunde | NF | no factor TF: 60-61 | | 2003-09-14 | -anonymous- | NF-PM1 | B1=2048, B2=204800 | | 1999-06-15 | -anonymous- | C-LL | 856EC3505CD747F5 | | 1998-02-19 | -anonymous- | NF | no factor TF: 1-58 | | 1998-02-19 | -anonymous- | C-LL | 856EC3505CD747F5 |
|
