LOL MoeJuck
As I’ve said, I had a love/hate relationship with that thread. I loved finding weird and or oddball properties for those numbers (… this is a sum of 2 triangular numbers and 3 consecutive primes…)
But as I’ve said, I sometimes would spend up to 30 minutes just to post one number. (So it is good that it is gone… but :::: sigh ::::
Anyway - another “fun fact” about 28?
In the short run, the calendar runs on a 28 year cycle. (This is due to 7 days per week and a leap day every 4 years.) Of course what messes this up is that 3 out of 4 century years cannot be Leap Years and so in the long run the calendar is actually on a 400 year cycle.
And for those of you still awake, another fun fact of 28? It is the last 2 digits of www.1728.com - not only a great website but possibly the greatest achievement in Western Civilization - the world shall never see its like again (IMHO). LOL
Bear_Nenno
I’m as unhappy about the “perfect number” definition as you are.
You don’t count 1 as a factor, You don’t count 1 as a prime number, so why on earth do “they” decide that 1 is a divisor?