| 9621977 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 269 TF target 268 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 3 / 280 |
Estimated T-Level: 20.1 ⓘ TF below 2^62 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | 2000-04-19 | Igor Yashkin | 80B5743E6F4AF0F0 | 8362511 | Windows,Prime95,v19,(aka WV1) | | Factored | 2003-06-06 | Marc Getty / Phil Fizur | 80B5743E6F4AF0F0 | 6077267 | Windows,Prime95,v22,NT service,(aka WY5) |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | PRP without proof (not generated) | 2019-10-04 | Niels_Mache_Nextcloud | 37B103BFE78895B8 | 1 | 7319731 | 5 | 3 | | Verified | Certified Good | 2020-12-16 | storm5510 | 37B103BFE78895B8 | 1 | 9231406 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-12-03 | Mingye Wang | NF | no factor TF: 68-69 | | 2020-12-16 | Bruno | CERT | Proof certified good | | 2020-12-16 | storm5510 | C-PRP | M9621977/82364340604391493761 : 37B103BFE78895B8 Proof Certified Good
Proof Power: 8
| | 2019-10-04 | Niels_Mache_Nextcloud | C-PRP | M9621977/82364340604391493761 : 37B103BFE78895B8 | | 2016-09-13 | snme2pm1 | F | Factor: 82364340604391493761 / TF: 66-67* | | 2015-04-29 | VictordeHollander | NF | no factor TF: 65-66 | | 2013-08-28 | Nesowa | NF | no factor TF: 64-65 | | 2013-02-06 | Nesowa | NF-PM1 | B1=115000, B2=2185000, E=6 | | 2009-07-27 | Carsten Kossendey | NF-PM1 | B1=55000, B2=852500, E=6 | | 2003-06-06 | -anonymous- | C-LL | 80B5743E6F4AF0F0 | | 2000-04-19 | -anonymous- | C-LL | 80B5743E6F4AF0F0 | | 1999-06-26 | -anonymous- | NF | no factor TF: 1-64 |
|
