# Mathematics Weblog

## Dr Who’s Happy Primes

Saturday 19 May 2007 at 8:34 pm | In Articles | 1 CommentIt’s so nice to see mathematics playing an important part in popular television. In tonight’s Dr Who the spaceship crew had to find the next number in the sequence 313, 331, 367, …. Dr Who recognises this as a sequence of happy primesÂ with the next one being 379. It’s all explained at that Wikipedia articleÂ and a longer version of the sequence can be found at the wonderful The On-Line Encyclopedia of Integer Sequences.

It’s interesting that the Dr Who reference was put in the Wikipedia article half-an-hour before the programme was aired so probably an inside job. I was delighted thatÂ in the programme Dr WhoÂ asked if mathematics was so dumbed down that recreational maths wasn’t studied any more. As Russell T.Â Davies, the head writer,Â said in tonight’sÂ Dr Who Confidential, the programme reflects current concerns, so this problem has clearly reached a wider audience than I imagined was the case.

## 1 Comment »

RSS feed for comments on this post. TrackBack URI

## Leave a comment

Powered by WordPress with Pool theme design by Borja Fernandez.

Entries and comments feeds.
Valid XHTML and CSS. ^Top^

[...] that are undecided plus the margin of error (not to be confused with the Keith Number–don’t they teach recreational mathematics anymore?). If the Keith Number had been in play before New Hampshire, the pundits might not have been able [...]

Pingback by The Real Keith Number « TV BACON — Tuesday 5 February 2008 1:28 am #