Bike Computer Reset, what is my wheel size code?

Question

I recently changed the battery in my Sigma Sport BC 1200 and need to enter a 4 digit code for my wheel size. My tires are Michelin Ironman 23-571 (650 X 23C). I've tried to follow the directions on line from Sigma (measured my tires, did the conversions to cm, etc) but can not get it right. Please help me. My question is: What is the proper wheel size code given the facts above? Thank you.

Answer 1

1944mm or 194cm