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Posts tagged digits

October 6, 2011


The number 86 in tile format in a subway station in New Yorl City

Number Magic

Here's a number puzzle that's bound to make your friends think you are either a mind reader or a magician.

July 6, 2009


Pile of credit cards

Internet Security and Prime Numbers

Ever wonder how websites like keep your personal information, like credit card numbers, safe from the internet bad guys? Well, here's the scoop.

March 30, 2009


Baby elephant with mother

The Origin of Fingers and Toes

Before about 360 million years ago, no vertebrates had limbs. They all shared the same fish-like body shape. But around that time something exciting happened.

December 14, 2005


ulam spiral

The Largest Prime Number

The largest prime number so far discovered is 7,816,230 digits long!

September 27, 2003



Time once more for the Moment of Science word of the Day. Today's word is dither.

September 27, 2003


Counting on Your Fingers

The Greenlandic word for the number seven translates as, “second hand, two.” That means you count five on the first hand and add two from the second, to make seven. After you run out of fingers, go for the toes. Thirteen translates as “first foot, three.” That means you add all ten fingers plus three toes.

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