1. After pricing its initial public offering at $38 per share, Facebook stock hit the market at $42 a pop Friday morning, vaulting the social network to a valuation of well over $100 billion, and positioning Facebook to raise some $16 billion, making it one of the largest IPOs in U.S. history.  “It’s official,” says Mike Isaac at All Things D, “$FB has arrived.” 

    $104.12 billion
    Facebook’s value (based on the $38 IPO price), making it worth more than McDonald’s, Kraft, Citigroup, Amazon, and Disney 

    $16 billion
    Funds that Facebook’s public offering is expected to raise

    421.2 million
    Shares of Facebook Class A common stock made available to the public Friday

    80 million
    Shares of Facebook stock that changed hands in the first 30 seconds of trading

    901 million
    Facebook users worldwide. “If Facebook were a country, it would be the the third largest in the world,” says digital analyst Brian Solis, lagging behind only China and India, respectively. 

    812 million
    Total internet users in 2004, the year “TheFacebook.com” made its debut in Harvard dorm rooms 

    1,000
    New millionaires Facebook’s IPO is expected to create

    2.3
    Percent of Facebook owned by U2 singer Bono, who now eclipses Paul McCartney as the richest musician in the world, says GigaOm

    $19.1 billion
    Estimated net worth of Mark Zuckerberg, 28, making him the 29th richest person in the world

    More numbers

    (Source: theweek.com)