| 1377403 | 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 | 105 / 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 | | Mark Skidmore | 5A93035B7778104D | 0 | Windows 16-bit,Prime95,v13,PFA,(aka WP0) | | Factored | | Cornelius Caesar | 5A93035B7778104D | 0 | Mac,John Sweeney,vLL1.0b1,(aka J4) | | Factored | 2008-03-05 | Brian J. Beesley | 5A93035B7778104D | 45564 | Linux 32-bit,Prime95,v24 final,(aka Wc2) | | Factored | 2016-06-02 | MadPoo 🙂 | 5A93035B7778104D | 320308 | 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 | 9A6F8671590431DE | 0 | 1 | 3 |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | PRP without proof (not generated) | 2018-04-25 | Oliver Kruse | 9A6F8671590431DE | 1 | 394415 | 5 | 3 | | Verified | PRP without proof (not generated) | 2018-04-28 | storm5510 | 9A6F8671590431DE | 1 | 664136 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-09-03 | Carlos Pinho | CERT | Proof certified good | | 2025-09-01 | Kriesel | C-PRP | 9A6F8671590431DE Proof Certified Good
Proof Power: 6
| | 2022-03-07 | LordJulius | NF | no factor TF: 56-57 | | 2018-04-28 | storm5510 | C-PRP | M1377403/132490408742015151599 : 9A6F8671590431DE | | 2018-04-25 | Oliver Kruse | C-PRP | M1377403/132490408742015151599 : 9A6F8671590431DE | | 2018-04-23 | TJAOI | F | Factor: 132490408742015151599 / TF: 66-67 | | 2016-06-02 | MadPoo 🙂 | C-LL | 5A93035B7778104D | | 2016-02-23 | Mark Rose | NF | no factor TF: 58-60 | | 2015-09-22 | ramgeis | NF | no factor TF: 65-66 | | 2015-04-17 | snme2pm1 | NF | no factor TF: 64-65 | | 2015-04-17 | snme2pm1 | NF | no factor TF: 63-64 | | 2014-09-13 | mikr | NF-PM1 | B1=3106900, B2=111849000, E=12 | | 2014-04-22 | Joss | NF-PM1 | B1=200000 | | 2014-04-16 | Joss | NF-PM1 | B1=120000 | | 2014-04-15 | -anonymous- | NF-PM1 | B1=110000 | | 2013-01-23 | dbaugh | NF | no factor TF: 62-63 | | 2012-09-29 | c10ck3r | NF | no factor TF: 61-62 | | 2009-02-16 | Sturle Sunde | NF | no factor TF: 60-61 | | 2003-09-21 | megavink | NF-PM1 | B1=15000, B2=228750 | | 2003-09-21 | Team Prime Rib | NF-PM1 | B1=15000, B2=228750 | | 1999-01-02 | -anonymous- | NF | no factor TF: 1-56 | | 1998-08-24 | -anonymous- | NF | no factor TF: 1-58 |
|
