| 63208553 | Composite: proven not-prime with both PRP and Lucas-Lehmer tests No factors below 275 TF target 274 |
| P-1 | |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Verified | 2013-08-30 | Kyle Z Schmidt | 01771DAECD388FBE | 50505715 | Windows 64-bit,Prime95,v27.9,build 1 | | Verified | 2025-10-22 | Jason Lynch | 01771DAECD388FBE | 30899620 | Linux 64-bit,Prime95,v31.0,build 5 |
|
| PRP | | Status | Proof | Date | User | Residue | Shift | Type | Base |
|---|
| Verified | Certified Good Power=9 | 2023-02-11 | Richard Thomas | FEA9457526F4C924 | 62934385 | 1 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-10-22 | Jason Lynch | C-LL | 01771DAECD388FBE | | 2023-02-11 | Yeakomeister | CERT | Proof certified good | | 2023-02-11 | Richard Thomas | C-PRP | FEA9457526F4C924 Proof Certified Good
Proof Power: 9
| | 2022-12-27 | tottenhoff | NF | no factor TF: 74-75 | | 2016-02-23 | Mark Rose | NF | no factor TF: 59-63 | | 2013-08-30 | Kyle Z Schmidt | C-LL | 01771DAECD388FBE | | 2013-06-03 | HBendtz | NF-PM1 | B1=565000, B2=11158750, E=12 | | 2013-05-04 | megavink | NF | no factor TF: 73-74 | | 2013-05-04 | megavink | NF | no factor TF: 72-73 | | 2013-05-04 | megavink | NF | no factor TF: 71-72 | | 2013-03-23 | kracker | NF | no factor TF: 70-71 | | 2011-12-20 | GrunwalderGIMP | NF | no factor TF: 69-70 | | 2009-09-13 | Sturle Sunde | NF | no factor TF: 68-69 | | 2009-09-11 | Spielauer | NF | no factor TF: 67-68 | | 2009-09-09 | Spielauer | NF | no factor TF: 66-67 | | 2009-09-07 | Michael Hanscho | NF | no factor TF: 65-66 | | 2009-09-03 | Michael Hanscho | NF | no factor TF: 64-65 | | 2009-02-10 | Wojciech Florek | NF | no factor TF: 63-64 | | 2003-07-30 | Gordon Spence | NF | no factor TF: 1-59 | | 1999-11-17 | -anonymous- | NF | no factor TF: 1-50 |
|
