| 2273497 | 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 | 117 / 640 |
Estimated T-Level: 25.9 ⓘ TF below 2^81 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | | Wayne Scott | 425812290F3D81FF | 0 | Linux 32-bit,Prime95,v13,(aka WP2) | | Factored | 1999-04-13 | larry allen | 425812290F3D81FF | 1670290 | Windows,Prime95,v17,(aka WT1) |
|
| 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 | 9ECB352831C24D99 | 1 | 0 | 1 | 3 | | Verified | PRP without proof (not generated) | 2017-11-21 | storm5510 | 9ECB352831C24D99 | 1 | 1390465 | 1 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2017-11-21 | storm5510 | C-PRP | M2273497/1266706104384619761871 : 9ECB352831C24D99 | | 2017-10-11 | Oliver Kruse | C-PRP | M2273497/1266706104384619761871 : 9ECB352831C24D99 | | 2016-04-30 | alpertron | NF-PM1 | B1=500000, B2=15000000, E=12 | | 2002-06-29 | -anonymous- | F-PM1 | Factor: 1266706104384619761871 | | 1999-07-12 | -anonymous- | C-LL | 425812290F3D81FF | | 1999-04-13 | -anonymous- | C-LL | 425812290F3D81FF |
|
