| 2021-05-13 | Jens Pedersen | NF | no factor from 2^73 to 2^74 |
| 2020-10-27 | SRBase | NF | no factor from 2^72 to 2^73 |
| 2020-06-14 | SRBase | NF | no factor from 2^71 to 2^72 |
| 2020-02-01 | tdrgchess | NF | no factor from 2^70 to 2^71 |
| 2018-06-26 | Zenghui | NF | no factor from 2^69 to 2^70 |
| 2017-12-31 | rubikvn2100 | NF | no factor from 2^68 to 2^69 |
| 2016-01-21 | Bruno Victal | NF | no factor from 2^67 to 2^68 |
| 2015-10-20 | vwflat4 | NF | no factor from 2^66 to 2^67 |
| 2012-05-14 | america64 | NF | no factor from 2^65 to 2^66 |
| 2011-05-28 | Mr-Plonk | NF | no factor from 2^64 to 2^65 |