In a website (http://www.jewfaq.org/prophet.htm) I found the following quotation:
The Talmud teaches that there were hundreds of thousands of prophets: twice as many as the number of people who left Egypt, which was 600,000. But most of the prophets conveyed messages that were intended solely for their own generation and were not reported in scripture.
But it doesn't give the exact source and doesn't explain much. I have many questions. Where they prophesizing only to Israel or to the nations too? Does anybody know the exact source and/or any other related sources about this subject of the total number of prophets? Do we know any extra information like their names, messages, locations, nation they belonged to, timeframe, etc?
Thank you all in advance!
All the best!