Do you have to paint Hardie Plank, (Fiber Cement siding) and How Often?

Residing My Home, Need Help.Do you have to paint Hardie Plank, (Fiber Cement siding) and How Often?
When ever the finish starts to look worn you can repait. Some hardie plank came factory finished. It paints different than the unfinished from the factory. It paints easy and holds paint very well.Do you have to paint Hardie Plank, (Fiber Cement siding) and How Often?
Prime it and paint it what you want for a finish coat. Repaint when it needs it.