Basically, the probability of you existing at all comes out to 1 in 102,685,000 — yes, that’s a ten followed by 2,685,000 zeroes! Now since that number doesn’t really help you grasp its complexity here's how it’s broken down:
The odds of your mother and father meeting face-to-face is one in 20,000.
Then the odds of both your parents going on to have a child is one in 2,000.
Your mother has 100,00 eggs, while your father produces 4 trillion sperms during the years you could have been born. The odds of the exact egg and
the exact sperm to meet and create you with all your characteristics is one in 400,000,000,000,000,000 or one in 400 quadrillion.
The odds that the very same process happened throughout 50,000 generations of your family to get to you (without a single death) is one in 1073,866.
Therefore, the odds of you existing right now exactly how you
are (and not as your brother or sister) is one in ten 2,685,000.
Okay, that’s a lot of numbers but what’s special is that you did come out number one in all those chances, against all odds. Your mere existence is a statistical miracle. You are significant beyond great measure.