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 $16 billion, making it one of the largest IPOs in U.S. history. Company founder Mark Zuckerberg, dressed in a half-zipped hoodie, remotely rang Nasdaq's opening bell from Facebook's California office at 9:30 a.m. EST, following an all-night company party to celebrate the occasion. "It's official," says Mike Isaac at All Things D, "$FB has arrived." Here, a look at Facebook's historic day, by the numbers:    

$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

$17.9 billion
Funds raised by Visa's public offering in 2008 — the only U.S. IPO bigger than Facebook's

$1.67 billion
Funds raised by Google's public offering in 2004, at that point, the largest tech IPO in history

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 "" made its debut in Harvard dorm rooms 

Harvard students who signed up for the new social network within 24 hours

922 million
Total internet users in all of Asia today

476 million
Internet users in all of Europe

New millionaires Facebook's IPO is expected to create

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

$800 million
Price Yahoo offered to purchase Facebook from Zuckerberg in 2006. He declined.

$18.5 billion
Yahoo's value today

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

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

Editor's note: This article originally misstated the year that Yahoo offered to buy Facebook. It has since been revised. We regret the error.

Source: All Things D, BrianSolis.comCNN Money,, Los Angeles TimesMarketing Week, New York Times, The Next WebPandoDaily, The StreetWashington Post, Wired