Counting

[tubeguru]

I think I can forgive you that one.

[GuyBarry]

911 is the American emergency telephone number.

But in the Stonecutters episode of the Simpsons ("Homer the Great"), Lenny tells Homer that the real emergency number is 912.

[RobbieM]

913 has exactly the same digits in three different bases. Bet you never knew that!

[GuyBarry]

The Porsche 911 may have been disallowed, but not the Porsche 914, which was designed, manufactured and marketed collaboratively by Volkswagen and Porsche from 1969 to 1976.

[The Orange One]

Violinists use E915 very liberally. I love the 900 E numbers. They're such unexpected things!

[GuyBarry]

916 is yet another strobogrammatic number, in certain fonts - as I'm sure you all know by now, that means it looks the same upside down. (Such numbers are also known as "ambigrams".)

[nozzacook]

The Porsche 917
Is the car that gave Porsche its first overall wins at the 24 Hours of Le Mans in 1970 and 1971. Powered by the Type 912 flat-12 engine of 4.5, 4.9, or 5 litres, the 917/30 variant was capable of a 0-62 mph (100 km/h) time of 2.3 seconds, 0–124 mph (200 km/h) in 5.3 seconds, and a top speed of over 240 mph (390 km/h).
There are at least nine variants of the 917. The original version had a medium-long tail with flippers, but had considerable handling problems at high speed because of poor bodywork aerodynamics. The Wyer-Gulf team then experimented with a shorter tail, and solved the aerodynamic and handling problems at testing sessions at the Österreichring, at the expense of some top speed. Porsche adopted these changes into the 917K, which dominated in the 1970 and 1971 World Sportscar Championships. In 1971, a variant of the 917K appeared with an altered tail and shark fins, which together reduced drag and maintained down force. These versions produced around 620 bhp. There were also streamlined versions specifically for Le Mans (1970 917L and 1971 917LH) that were 20 mph faster in a straight line. In 1971 Jo Siffert raced an open-top 917PA Spyder (normally aspirated) in the 1971 CanAm series. There is also the "Pink Pig" aerodynamic research version (917/20), and the turbocharged 917/10 and 917/30 CanAm Spyders. Porsche 917s also raced in the European Interseries in various configurations. In the 1973 Can-Am series, the turbocharged version Porsche 917/30 developed 1,100 bhp (820 kW).

[GuyBarry]

The 918 Letterpress Printed Ephemera Show is currently under way at the Samford University Art Gallery in Birmingham, Alabama. The name of the show is based on the fact that letterpress wood and metal type is made .918 inches tall.

[The Orange One]

E919 is one of those actually dangerous E numbers. It is a yellow gas, highly toxic, irritating to the lungs, eyes and skin. It is therefore used in the production of nylon.

The world is making a whole lot of sense today.

[GuyBarry]

The Nokia Lumia 920 smartphone was released on November 2nd 2012.

[DrainBrain]

3 times 307...
The Peugeot 307 has won exactly three WRC events.

(I know, I know, but it seems we've been stuck at 921 for a while.)

[GuyBarry]

Very clever! (Hope it's allowed.)

922 = 1234 in base 9.

[The Orange One]

E923 is a standard ingredient in hair bleach.

[GuyBarry]

924 is the sixth central binomial coefficient, which means that it appears exactly in the centre of the 12th row of Pascal's Triangle.

[nozzacook]

Sterling silver is an alloy of silver containing 92.5% by mass of silver and 7.5% by mass of other metals, usually copper. The sterling silver standard has a minimum millesimal fineness of 925.