Curious Number Patterns #2

Interesting Patterns

777² = 603729

(603 + 729)/2 = 666

Doing a similar procedure for 666,

666² = 443556

except that we don’t divide the sum of the two 3-digit groups by 2.

443 + 556 = 999

Same procedure for 999:

999² = 998001

998 + 001 = 999

The following is a similar pattern with larger numbers and it’s more elegant:



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My name Edmark M. Law. I work as a freelance writer, mainly writing about science and mathematics. I am an ardent hobbyist. I like to read, solve puzzles, play chess, make origami and play basketball. In addition, I dabble in magic, particularly card magic and other sleight-of-hand type magic. I live in Hong Kong. You can find me on Twitter` and Facebook. My email is

18 thoughts on “Curious Number Patterns #2

  1. Hello. Thank you for enjoying my butterfly poem. Your number system is interesting. Please come back more often. Take care.


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