MATLAB: How to write a program that can display the first 50 consecutive prime numbers starting with 2

homeworkprime numbers

Primes(x) and isPrime(x) are not allowed for this question. fprintf should be used. I was thinking of using a while loop with maybe a for and/or if's inside. I am new to MATLAB so any help would be appreciated. Thanks!

Best Answer

for ii = 1:inf
  nguess = ii;
  mat = tril(bsxfun(@times,2:nguess,(2:nguess).'));
  pn = setdiff(2:nguess,mat(logical(mat)));
  if numel(pn)>50
      pn = pn(1:50);
      break
  end
end

Maybe?

Related Solutions

MATLAB: How to create a list where it shows the values from the list 1:N so that in the list it says which numbers are prime

Try this:

N = 55;
primeNumbers = primes(N)
fprintf('list: ');
for k = 1 : N
	fprintf('%d', k);
	if ismember(k, primeNumbers)
		fprintf(' (prime), ');
	else
		fprintf(', ');
	end
end

You get in the command window:

list: 1, 2 (prime), 3 (prime), 4, 5 (prime), 6, 7 (prime), 8, 9, 10, 11 (prime), 12, 13 (prime), 14, 15, 16, 17 (prime), 18, 19 (prime), 20, 21, 22, 23 (prime), 24, 25, 26, 27, 28, 29 (prime), 30, 31 (prime), 32, 33, 34, 35, 36, 37 (prime), 38, 39, 40, 41 (prime), 42, 43 (prime), 44, 45, 46, 47 (prime), 48, 49, 50, 51, 52, 53 (prime), 54, 55,

How's that? If you need to not print the final trailing comma, you can print a backspace.

MATLAB: How can i add a prime counting function to this

n = zeros(1,N);
n(p) = 1;
c = cumsum(n);

Best Answer

Related Solutions

MATLAB: How to create a list where it shows the values from the list 1:N so that in the list it says which numbers are prime

MATLAB: How can i add a prime counting function to this

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