| 2642621 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 268 TF target 263 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 189 / 280 |
Estimated T-Level: 23.4 ⓘ TF below 2^73 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | | Dennis Kluk | 205F0EE140EF9328 | 0 | Windows,Prime95,v13,(aka WP1) | | Factored | 1999-05-09 | Edward Quan | 205F0EE140EF9328 | 2382759 | 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) | 2017-10-18 | Oliver Kruse | BE10EE8FBF6283C8 | 1 | 1127010 | 5 | 3 | | Verified | PRP without proof (not generated) | 2017-12-03 | storm5510 | BE10EE8FBF6283C8 | 1 | 825894 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2022-03-11 | LordJulius | NF | no factor TF: 1-60 | | 2019-07-04 | alpertron | NF-PM1 | B1=2000000, B2=60000000, E=12 | | 2017-12-03 | storm5510 | C-PRP | M2642621/8623506444030794489 : BE10EE8FBF6283C8 | | 2017-10-18 | Oliver Kruse | C-PRP | M2642621/8623506444030794489 : BE10EE8FBF6283C8 | | 2011-01-18 | James Heinrich | F | Factor: 8623506444030794489 | | 2009-06-21 | USAFSS | NF-PM1 | B1=30000, B2=420000 | | 2009-01-30 | Sturle Sunde | NF | no factor TF: 60-61 | | 2003-10-31 | -anonymous- | NF-PM1 | B1=2048, B2=204800 | | 1999-05-09 | ANONYMOUS | C-LL | 205F0EE140EF9328 | | 1999-03-26 | ANONYMOUS | NF | no factor TF: 1-59 |
|
