There is only one Perfect Number within this range : 496.
If 2ⁿ - 1 is prime then 2ⁿ⁻¹(2ⁿ - 1) is a perfect number.
In this instance n = 5 then, 2⁴(2⁵ - 1) = 16 x 31 = 496...........and 31 is a Prime number.
496.
500
456
102
400 of them.
Any number between 20 and 22.36
496.
500
453
456
400
this mean case numbers between 400 and 500 e.g. at the start of March: The key points you need to know from today is NPHET briefing
How about 450
102
They are: 529 and 576
432, 468
400 of them.