| 1843147 | Composite: proven not-prime with both PRP and Lucas-Lehmer tests No factors below 268 TF target 261 |
| P-1 | | B1 = | 25000000 | | B2 = | 69201594000 |
|
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 280 / 280 | | 30 | 250000 | 106 / 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 |
|---|
| Verified | | Joel Smith | B87FB44944672AEE | 0 | Windows,Prime95,v13,(aka WP1) | | Bad | 1999-05-30 | Aaron B | C4DD4BE518C378A4 | 1581159 | Windows,Prime95,v18,(aka WU1) | | Verified | 1999-08-22 | Franck TROMMENSCHLAGER | B87FB44944672AEE | 336530 | Windows,Prime95,v18,(aka WU1) | | Verified | 2015-07-06 | MadPoo 🙂 | B87FB44944672AEE | 169962 | Windows 64-bit,Prime95,v26,(aka We4) |
|
| PRP | | Status | Proof | Date | User | Residue | Shift | Type | Base |
|---|
| Verified | Certified Good Power=6 | 2025-09-02 | Kriesel | 89CFCBFE33000680 | 0 | 1 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-09-03 | Carlos Pinho | CERT | Proof certified good | | 2025-09-02 | Kriesel | C-PRP | 89CFCBFE33000680 Proof Certified Good
Proof Power: 6
| | 2023-11-16 | kurly | NF-PM1 | B1=25000000, B2=69201594000 | | 2023-06-09 | Joss | NF-PM1 | B1=1843147, B2=8776559610 | | 2023-01-09 | Joss | NF-PM1 | B1=1843147, B2=1644232590 | | 2022-10-30 | masser | NF-PP1 | Start=2/7, B1=800000, B2=25600000 | | 2022-10-29 | masser | NF-PP1 | Start=6/5, B1=400000, B2=10800000 | | 2022-10-27 | masser | NF-PP1 | Start=146/13, B1=200000, B2=4400000 | | 2019-06-24 | TJAOI | NF | no factor TF: 67-68 | | 2018-08-06 | Joss | NF-PM1 | B1=1843147, B2=184314700, E=12 | | 2017-11-24 | TJAOI | NF | no factor TF: 66-67 | | 2016-02-23 | Mark Rose | NF | no factor TF: 61-62 | | 2016-02-23 | Mark Rose | NF | no factor TF: 62-63 | | 2016-02-23 | Mark Rose | NF | no factor TF: 58-60 | | 2015-09-06 | ramgeis | NF | no factor TF: 65-66 | | 2015-07-12 | mikr | NF-PM1 | B1=2780000, B2=91760000, E=12 | | 2015-07-06 | MadPoo 🙂 | C-LL | B87FB44944672AEE | | 2015-04-27 | snme2pm1 | NF | no factor TF: 64-65 | | 2015-04-27 | snme2pm1 | NF | no factor TF: 63-64 | | 2014-09-25 | Joss | NF-PM1 | B1=169646 | | 2014-05-19 | Joss | NF-PM1 | B1=134823 | | 2011-02-11 | Carsten Kossendey | NF-PM1 | B1=100000, B2=1700000, E=6 | | 2011-01-21 | GrunwalderGIMP | NF | no factor TF: 1-63 | | 2010-04-08 | Architects Cubed | NF | no factor TF: 60-61 | | 2003-01-16 | -anonymous- | NF | no factor TF: 1-58 | | 1999-08-22 | -anonymous- | C-LL | B87FB44944672AEE | | 1999-05-30 | MadPoo 🙂 | C-LL | C4DD4BE518C378A4 |
|
