Who knows one hundred sixty-six?
Please cite/link your sources, if possible. At some point at least twenty-four hours from now, I will:
Upvote all interesting answers.
Accept the best answer.
Go on to the next number.
The sun is 166 times the size of the earth (plus change). - Rambam, preface to Commentary on the Mishna
There is a lot of talk about the Christians censoring 166 years of the Jewish calendar. That would mean we only have 63 years left till the year 6000.