17 chickens
Crazy Chicken Math
That's actually backwards. If you leave them out you can not wash them. When you wash them you remove the bloom which is the protective coating that keeps the harmful bacteria from entering the egg. Which leaves you susceptible to food poisoning. The cold from the refrigerator opens the pores in the egg, which also allows harmful bacteria to enter. So if you choose to refrigerate, you should always wash first.
You are correct! Just wanted to add something to your comment, You can use lite grit sandpaper then a dry paper towel to wipe them off or you can use water to wash but has to be 20 degrees warmer then the egg. This is to keep the pores on the egg from not opening. If you google your state and egg washing laws or your state and egg selling laws it should bring up the section on washing. I sell all my eggs and have over 100 hens and growing this year by double the hens. So I know our laws in Washington state.