Get two input from user, 2 num, and display all the perfect numbers between this two numbers.

To accept two numbers from the user and display perfect numbers between these two numbers. I am trying to create a script with this question. I am stuck at,

clc num1 = input('Enter 1st num: '); num12 = input('Enter 2nd num: '); n = num1:num2;

Answer 1

[Stephen23]

Try this:

function out = perfect(N1,N2)
P = [2,3,5,7,13,17,19,31,61,89,107,127,521,607]; % Mersenne primes.
C = arrayfun(@(p)repmat('10',p,1),P,'UniformOutput',false);
out = cellfun(@(s)bin2dec(s(1:end-1)),C);
out(N1>out|out>N2) = [];
end

And some examples of it being used:

>> perfect(1,100)
ans =
                     6                    28
>> perfect(8128,1e10)
ans =
                  8128              33550336            8589869056