Honestly, what are the chances of sperm living for the 3-5 days

December

I’m really curious. I have read all kinds of things about sperm living the 3-5 days inside of us! I even seen a few things that said in some cases they have seen sperm alive 6-7 days in us 😳 but after 3 days, how much of the sperm is still alive? What real chance is there?

Anyone here know for a fact they conceived from sperm that lived in them for over 3 days???