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Happy π Day 2024 !! It’s the 14th of March, and written in the US date style, it is 3.14, which is an approximation of π. You can find a lot of info on π day here on Wikipedia. Memorising digits of π is not an uncommon activity amongst number enthusiasts. At one time, about… Continue reading Happy π Day 2024 !!

2022 in Roman numerals is MMXXII.  It is one of only four numbers whose Roman numeral equivalents have the pattern — aabbcc 222 AD was the last time a year had this pattern: 222 in Roman numerals is CCXXII. Next ones will be 2202 (MMCCII) and 2220 (MMCCXX) Another piece of trivia: 20th Feb 2022, in… Continue reading HNY MMXXII

A couple of months back, during an Ola ride, I spotted the number 6592 in the number plate of an oncoming car. I promptly went about one of my usual mental computing activities — that of multiplying the two 2-digit halves that make up a 4-digit number. In this case, multiplying 65 and 92. Extracting… Continue reading 6592

Today is the 13th of August ’21, and in the US style, it is 8/13/’21. The three numbers are ascending consecutive Fibonacci numbers. This is the last occurrence in this century of such a date with ascending consecutive Fibonacci numbers. If you are not happy with ’21, and want a real Fibonacci year, you’ll have… Continue reading 8/13/’21

On my way to work on 19 Sep 2019 I saw the number 8257 … Instantaneously, it was split into four squares in the following way: First 8100 (90**2) appeared, leaving 157 Almost in parallel, 144 (12**2) emerged from 157 leaving 13 (which is 2**2 + 3**2) It felt like the brain was on autopilot… Continue reading 8257

Identifying patterns in numbers that I come across in daily life, as well as performing mental arithmetic on them — these are continual threads of activity that run in my mind. For example … I might recognize that a 3-digit or 4-digit number I notice is a 4th power, or I might split an observed… Continue reading 6264

In this short blog I’ll mention a couple of immediate thoughts on the new year number 2017.  Feel free to add your thoughts below. From a number property perspective, it’s cool to note 2017 is prime!  The previous prime number year was 2011 and the next is 2027. Being a prime number of the form… Continue reading 2017