85

It's the year Hubby and I got married.

It's also the projected high temperature for today. That might not seem much for some of you, but considering I live in Michigan and I've only been seeing 60's and 70's and haven't had my air conditioning on for at least three weeks, it's hot for me. We have to keep our windows closed at night because it gets too cold.

Just for fun, 85 is a biprime number, meaning that it is the product of two prime numbers (specifically 5 and 17). It's the 24th biprime number not counting perfect squares, and combined with 86 and 87 forms the second cluster of three consecutive biprime numbers. I found all that information courtesy of Wikipedia.

Just for more fun, Wikipedia also says that another word for biprime is semiprime. As of September 2008, the largest known semiprime number has over 25 million digits, is calculated by taking the square of the largest known prime number, and is expressed (2ⁿ-1)² where n=43,112,609. I just couldn't find a shortcut to stick it up there.

When I was a kid, I used to like making up my own math problems and solving them. Yes, I'm a math geek, but this is a bit extreme.

Photo courtesy of Leo Reynolds on flickr.