But thirty-five hundred works.
Is twenty hundred really okay without some other number between the twenty and the hundred? Do people really say ten hundred? I think people know what you mean if you say them. But once you have asked the question, you can no longer provide data. Unless you can go back to some video or recording made previously.
I once accidentally recorded my siblings and I hanging around talking one sunday afternoon. I moved some stuff off the piano and the tape recorder fell on the floor in a way that it magically started recording.
One of the challenges of linguistic study is that it is generally considered ethical to let people know they are being studied, but if they know they are being studied they don't talk naturally.