Today is Day 169 of 2018
| is a square whose digits are non-decreasing.|
= (16 + 9) + (16 x 9)
169 = 19 - 6
Many thanks are extended to Archimedes' Lab for their information.
Today is day number of 2018. Below are various representations of the number 169, some dating thousands of years, and some very modern.
Many thanks are extended to Jo Edkins for her wonderful work.