Tuesday, September 21, 2010


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.


Kelli said...

Enjoy your warm weather! I love your little blog!


Mari said...

It's supposed to hit 80 over here. The lake keeps us a little cooler.
Glad you enjoyed that little math project. I never could get into math like that, but it makes me smile when I read what you have to say.

The Stylish House said...

I love living where there are four seasons. There's many nice things living in Michigan such as the walking trails and cider mills. Enjoy this glorious autumn day!

It's me said...

Enjoy your warm weather...it is autumm here today...it gets colder now.......happy evening ......have you see my post??? come and look please............warm hugs or are cold better??? hahahah!! Ria...

Betsy said...

I suppose you would even enjoy Business Calculus with Taylor. :)

We're hitting 90 all week! Indian Summer maybe?

Lora @ my blessed life said...

Ahh...60's & 70's!? Closing the windows b/c it's TOO cold?! How lovely! I'm so jealous! I think there's been a total of 3 nights I've been able to keep our windows open~and I'm not even sure it made it to the 60's at night! I bet your Indian summer won't last long. I hope cooler temps are on their way here.

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