| 402143717 | Composite: proven not-prime with PRP test No factors below 281 TF target 281 |
| P-1 | | B1 = | 4800000 | | B2 = | 1011091950 |
|
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 280 / 280 | | 30 | 250000 | 84 / 640 |
Estimated T-Level: 25.7 ⓘ TF below 2^80 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Unverified | 2020-03-22 | Kriesel | 42DD00E87B358F__ | 201086575 | CUDALucas v2.06beta |
|
| PRP | | Status | Proof | Date | User | Residue | Shift | Type | Base |
|---|
| Verified | Certified Good Power=10 | 2022-02-12 | Kriesel | CE2E36F69AD089AA | 0 | 1 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2024-08-25 | Kriesel | NF-PP1 | Start=146/13, B1=4800000, B2=1000000000 | | 2024-07-29 | Kriesel | NF-PP1 | Start=6/5, B1=4800000, B2=1000000000 | | 2024-05-27 | Kriesel | NF-PP1 | Start=2/7, B1=4800000, B2=1000000000 | | 2023-12-05 | Kriesel | NF-PM1 | B1=4800000, B2=1011091950 | | 2022-02-12 | aup | CERT | Proof certified good | | 2022-02-12 | Kriesel | C-PRP | Proof Certified Good
Proof Power: 10
| | 2020-03-22 | Kriesel | C-LL | 42DD00E87B358F__ | | 2019-05-03 | Kriesel | NF-PM1 | B1=3045000, B2=42630000, E=2 | | 2019-04-07 | Kriesel | NF | no factor TF: 80-81 | | 2019-04-07 | Kriesel | NF | no factor TF: 79-80 | | 2019-04-06 | Kriesel | NF | no factor TF: 78-79 | | 2019-04-06 | Kriesel | NF | no factor TF: 76-77 | | 2019-04-06 | Kriesel | NF | no factor TF: 77-78 | | 2019-04-06 | Kriesel | NF | no factor TF: 73-74 | | 2019-04-06 | Kriesel | NF | no factor TF: 74-75 | | 2019-04-06 | Kriesel | NF | no factor TF: 75-76 | | 2019-04-06 | Kriesel | NF | no factor TF: 71-72 | | 2019-04-06 | Kriesel | NF | no factor TF: 72-73 | | 2019-04-06 | Kriesel | NF | no factor TF: 70-71 | | 2018-08-08 | sasaki | NF | no factor TF: 69-70 | | 2017-08-16 | sasaki | NF | no factor TF: 68-69 | | 2013-10-30 | The Mawn | NF | no factor TF: 66-68 | | 2013-08-09 | The Mawn | NF | no factor TF: 65-66 |
|
