| 1247401 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 268 TF target 260 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 280 / 280 | | 30 | 250000 | 104 / 640 |
Estimated T-Level: 25.8 ⓘ TF below 2^81 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | | Joel Armengaud | 35D2B840A572E0AE | 0 | Windows,Prime95,v11,(aka WC) | | Factored | | Cornelius Caesar | 35D2B840A572E0AE | 0 | Mac,John Sweeney,v1.4,(aka J3) | | Factored | | Ricardo Montiel | 35D2B840A572E0AE | 0 | Mac,John Sweeney,v1.4,(aka J3) | | Factored | 2015-11-12 | MadPoo 🙂 | 35D2B840A572E0AE | 367147 | Windows 64-bit,Prime95,v26,(aka We4) |
|
| PRP | | Status | Proof | Date | User | Residue | Shift | Type | Base |
|---|
| Factored | Certified Good Power=6 | 2025-09-01 | Kriesel | F888362BA77BE622 | 0 | 1 | 3 |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | PRP without proof (not generated) | 2017-12-02 | Chun sung soo | F888362BA77BE622 | 1 | 685642 | 5 | 3 | | Verified | PRP without proof (not generated) | 2017-12-02 | storm5510 | F888362BA77BE622 | 1 | 782040 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-09-02 | BigHero8 | CERT | Proof certified good | | 2025-09-01 | Kriesel | C-PRP | F888362BA77BE622 Proof Certified Good
Proof Power: 6
| | 2017-12-02 | storm5510 | C-PRP | M1247401/3616854195413490352936543 : F888362BA77BE622 | | 2017-12-02 | Chun sung soo | C-PRP | M1247401/3616854195413490352936543 : F888362BA77BE622 | | 2017-12-01 | TJAOI | F-ECM | Factor: 3616854195413490352936543 | | 2016-02-23 | Mark Rose | NF | no factor TF: 58-60 | | 2015-11-12 | MadPoo 🙂 | C-LL | 35D2B840A572E0AE | | 2015-09-20 | ramgeis | NF | no factor TF: 65-66 | | 2015-04-06 | monst | NF | no factor TF: 64-65 | | 2015-04-05 | omylist | NF | no factor TF: 63-64 | | 2015-01-15 | mikr | NF-PM1 | B1=4218475, B2=156083565, E=12 | | 2014-09-25 | Joss | NF-PM1 | B1=251454 | | 2012-10-07 | dbaugh | NF | no factor TF: 62-63 | | 2012-09-14 | Axelsson | NF | no factor TF: 61-62 | | 2009-02-16 | Sturle Sunde | NF | no factor TF: 60-61 | | 2003-11-28 | eteo | NF-PM1 | B1=200000, B2=2000000, E=6 | | 2003-06-01 | -anonymous- | NF | no factor TF: 1-58 | | 2003-02-24 | -anonymous- | NF-PM1 | B1=2048, B2=204800, E=12 | | 2001-11-17 | -anonymous- | NF | no factor TF: 1-57 |
|
