| 79730971 | Composite: proven not-prime with Lucas-Lehmer test No factors below 276 TF target 275 |
| P-1 | | B1 = | 1500000 | | B2 = | 675197670 |
|
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Verified | 2017-02-11 | curtisc | 262B039ED1CDE141 | 79344756 | Windows Service,Prime95,v28.7,build 1 | | Verified | 2026-01-27 | riccardo uberti | 262B039ED1CDE141 | 40557570 | Windows 64-bit,Prime95,v30.7,build 8 |
|
| History | | Date | User | Type | Result |
|---|
| 2026-01-27 | riccardo uberti | C-LL | 262B039ED1CDE141 | | 2025-12-15 | riccardo uberti | NF-PM1 | B1=1500000, B2=675197670 | | 2025-09-05 | ElectricBill | NF | no factor TF: 75-76 | | 2017-02-11 | curtisc | C-LL | 262B039ED1CDE141 | | 2016-11-28 | Xolotl | NF-PM1 | B1=675000, B2=13668750, E=12 | | 2016-08-21 | AirSquirrels | NF | no factor TF: 74-75 | | 2016-08-21 | AirSquirrels | NF | no factor TF: 73-74 | | 2016-08-21 | AirSquirrels | NF | no factor TF: 72-73 | | 2016-03-02 | Derek | NF | no factor TF: 71-72 | | 2013-05-29 | Per Jessen | NF | no factor TF: 70-71 | | 2013-02-25 | wangyun183 | NF | no factor TF: 69-70 | | 2012-07-06 | spica | NF | no factor TF: 68-69 | | 2011-04-11 | Carsten Kossendey | NF | no factor TF: 67-68 | | 2011-04-11 | Carsten Kossendey | NF | no factor TF: 65-67 | | 2010-11-30 | Architects Cubed | NF | no factor TF: 64-65 | | 2009-05-28 | Architects Cubed | NF | no factor TF: 63-64 |
|
