Archive for April, 2007

Our Whiteboard & Shelves

Wednesday, April 11th, 2007

Every house has some kind of central communications area, usually centered around the phone. Ours is in the kitchen. This picture shows the whiteboard and shelves by our phone. Each item in the picture has a story to tell. Here are some of the things you see above: The Phone Numbers posted directly above the [...]

Smallest Unknown Prime Number

Tuesday, April 10th, 2007

A prime number is a natural number that has exactly two distinct divisors. Like 5939. It’s divisible only by 1 and by 5939. Mathematicians are constantly trying to find bigger and bigger prime numbers. Currently (as of April 2007), the largest know prime number is 232,582,657−1, found last September. So that’s the largest known prime. [...]