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Estimates of President Mubarak's personal fortune are fanning the outrage in Liberation Square. The question is how much is Mubarak really worth? We're trying to find out. It's not so easy. Tom Foreman digs into the math, ahead.And later, the facts on how many people are being detained and tortured in Egypt, even as the new vice president insists it's safe Tiffany 1837 bangle protestors to speak their mind. A reality check ahead.(COMMERCIAL BREAK)COOPER: I want to show you a picture taken today by an iReporter in Liberation Square. The sign held by the protestor on the left says, "My father won't steal $70 billion from me."

A reference to one of the highest estimates of Hosni Mubarak's personal fortune.It's impossible to say exactly how much money the Egyptian dictator has stashed away. But even the Tiffany 1837 bangle estimates are in the tens of billions. Meantime, 20 percent of Egyptians live in poverty.According to the World Bank, the median -- median annual income in Egypt is just $2,070. That's compared to $17,700 in Saudi Arabia, $46,360 in America. Tom Foreman has been looking into the Mubarak fortune.Tom, what have you found?TOM FOREMAN, CNN CORRESPONDENT: Anderson, we Tiffany Knots cuff that a variety of news organizations, as you mentioned, toss around some very big numbers, putting Mr. Mubarak's personal fortune at somewhere between $40 and maybe $70, $75 billion.

We also know that those number involved a lot of guesswork. Just look at that range: $35 billion. So these could be way, way off.Part of the trouble is also at this high-end estimate, it just doesn't fit in very well with what we know about other rich people in the world.For example, "Forbes" says the richest man in the world right now is this Mexican telecom owner. His wealth Paloma's Grown of Heart bangle estimated at almost $54 billion. So look at that, $54 billion, versus $75 billion, $70 billion. This would make Mubarak the richest man in the world right now. That raises some eyebrows and makes people say maybe this isn't quite right.