Probably many.
When? How? Russians persecuted Judaism consistently throughout the history of the country and the only reason that modern Russia (post-Soviet) does not have pogroms is because the Jews have all fled to Israel. If Russians did convert to Judaism it would have been in very small numbers as there is very little reason to convert to a persecuted minority that does not seek converts.
Considering the large number of people with ethnically Russian names, I would say likely many. The other user who added the second paragraph to the other answer must be antisemitic.
1 million
The United States, Israel, and Russia have substantial Jewish populations, and many other countries have some Jewish population.
5,510 Jewish people live in vermont
Many.
598,927 (2012)
2.500.000
over 380 million live in poverty in russia
598,927 (2012)
In Israel and the USA
approximately 2000
302,000,000- 319,000,000
about 4-6% of the population.
6