forty plus one

[adelaidesean]

ETA: Thanks, all, for your best wishes. The celebrations included lots of cake, good wine, and Bill Bailey. Brilliant!

Comments

[seanwilliams.livejournal.com]

But that's seven squared! A great number, much more exciting than a boring old prime (although there are some special things (http://primes.utm.edu/curios/page.php/41.html) about this one).