| 80521307 | Composite: proven not-prime with PRP test No factors below 276 TF target 275 |
| P-1 | |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Unverified | 2017-10-15 | drrex | 40842189B8ECD1__ | 72719804 | Windows 64-bit,Prime95,v28.5,build 2 |
|
| PRP | | Status | Proof | Date | User | Residue | Shift | Type | Base |
|---|
| Verified | Certified Good Power=9 | 2025-12-01 | Kamil Gorski | 708EC620FA0243A9 | 0 | 1 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-12-01 | Yxinity | CERT | Proof certified good | | 2025-12-01 | Kamil Gorski | C-PRP | 708EC620FA0243A9 Proof Certified Good
Proof Power: 9
| | 2025-09-09 | Kyle Askine | NF | no factor TF: 75-76 | | 2017-10-15 | drrex | C-LL | 40842189B8ECD1__ | | 2017-01-23 | arnaud | NF-PM1 | B1=680000, B2=13430000, E=6 | | 2016-10-22 | AirSquirrels | NF | no factor TF: 74-75 | | 2016-10-18 | Judge Hale | NF | no factor TF: 73-74 | | 2016-05-13 | Judge Hale | NF | no factor TF: 72-73 | | 2016-05-13 | Judge Hale | NF | no factor TF: 71-72 | | 2013-06-19 | processinfo | NF | no factor TF: 70-71 | | 2013-06-14 | -anonymous- | NF | no factor TF: 70-71 | | 2013-02-03 | rjbelans | NF | no factor TF: 69-70 | | 2013-01-29 | rjbelans | NF | no factor TF: 68-69 | | 2013-01-26 | phoenicis | NF | no factor TF: 67-68 | | 2011-01-27 | firejuggler | NF | no factor TF: 66-67 | | 2011-01-26 | ITS | NF | no factor TF: 65-66 | | 2010-12-02 | Architects Cubed | NF | no factor TF: 64-65 |
|
