According to Wikipedia, Ancient Egyptian belief in the sun god Ra started sometime before 2500 BC. In that Wikipedia article, it also states, "The rise of Christianity in the Roman Empire put an end to the worship of Ra by the citizens of Egypt." But I can't seem to find a time frame for that. Obviously, some time after 0 CE, but how long after?
I know there won't be exact dates for the beginning and end of the time frame that the Ancient Egyptians worshipped Ra and his pantheon of associated gods. But I'd like to get a reasonable number, rounded to the nearest hundred years if possible, to complete this sentence: "The ancient Egyptians worshipped Ra for ____ years."