The 197-page prospectus that Facebook filed with the Securities and Exchange Commission is filled with numbers and details about the company.

Above all, the documents confirmed what everyone had been hearing: Facebook is very profitable and getting stronger. The company Mark Zuckerberg started with some friends in 2004 has seen its annual revenue soar from $777 million in 2009 to $3.7 billion last year. Facebook's earnings have grown at a similar rate too, ballooning from $122 million in 2009 to $668 million last year.

The big question is whether Facebook's numbers are impressive enough to fetch the lofty IPO price. It's still too early in the process for Facebook to reveal how much it intends to ask for its shares, but Wednesday's filing provides some clues. Facebook valued its Class B common stock at $29.73 at the end of December, down slightly from appraisals of $30.07 in June and September. If this unfolds like most hot IPOs, Facebook will probably try to sell its shares at a premium. That could mean an IPO price in the $35 to $40 range. Investor demand, though, ultimately will dictate the pricing.

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