Comment by webglfan
5 days ago
I'll give you one: "Do any odd perfect numbers exist?"
You can read about it here: https://en.wikipedia.org/wiki/Perfect_number#Odd_perfect_num...
You can watch a short documentary about it here: https://www.youtube.com/watch?v=Zrv1EDIqHkY
Wonderful quote in there from James Joseph Sylvester:
>>... a prolonged meditation on the subject has satisfied me that the existence of any one such [odd perfect number] —its escape, so to say, from the complex web of conditions which hem it in on all sides— would be little short of a miracle.
Is 2+2 still 4 :p