Professor of Mathematics Education, STEM Education; into research, publishing
Brisbane, Queensland
Joined May 2013
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Lyn English retweeted
Another aspect of 2021 is, if we split the number and add up its digits or even add up its digits, this is what we get:
2+0+2+1= 5 (Prime)
2+021=23 (Prime)
20+21=41 (Prime)
202+1= 203 (Pseudo prime)
Wishing everyone a
PS: 2021 and its mirror 1202 if squared also are mirrors.
