Here is the original article from the BBC.
https://www.bbc.com/news/articles/c5yg4z6v600o
"So far, we have identified the names of 106,745 Russian soldiers killed during the full-scale invasion of Ukraine.
The true number is clearly much higher. Military experts estimate our number may cover between 45% and 65% of deaths, which would mean 164,223 to 237,211 people."