A while ago I added a clock to my “Is this prime?” website: it shows you when the Unix time is a prime number of milliseconds. Earlier today I had the thought that it could send you a notification when it’s prime time, so you won’t miss out even if you’re not staring at the…
Double Maths First Thing is trying to be good. Hello! My name is Colin and I am a mathematician on a mission to spread the joy and delight of doing maths. I had an “oo! oo! oo!” moment at MathsJam last week, figuring out a neat solution to a question that I’d not had time…
Double Maths First Thing is giving up sacrifice for Lent Hello! My name is Colin and I am a mathematician on a mission to spread joy and delight in doing and understanding maths. I’ve given a few classes this week where a student has suddenly lit up with an “I get it!” and it’s the…
A conversation about mathematics inspired by a piece of folklore. Presented by Katie Steckles and Peter Rowlett. Podcast: Play in new window | Download Subscribe: RSS | List of episodes
The next issue of the Carnival of Mathematics, rounding up blog posts from the month of January 2026, is now online at Letters and Words. The Carnival rounds up maths blog posts from all over the internet, including some from our own Aperiodical. See our Carnival of Mathematics page for more information.
Double Maths First Thing still has PRE earworms Hello! My name is Colin and I am a mathematician on a mission to spread the joy and delight that comes from engaging whole-heartedly with maths. I’ve been in Peterborough this weekend playing with the Pseudorandom Ensemble, putting together some songs we hope to record. (We’re available…
Here’s a question that’s been in the back of my head for a while: Starting from 1 and with just the arithmetic operations + – × ÷ available to you , how quickly can you build up to a given target number? You can do this on pen and paper, or even just in your…