prime_plot, a Python code which plots the prime and composite numbers.

An N by N grid A of squares is displayed. If N is prime, then the squares A(N,1:N) are red. If N is composite, then A(N,D) is blue for each divisor of N.


prime_plot ( 'n_max' )


The computer code and data files described and made available on this web page are distributed under the MIT license


prime_plot is available in a MATLAB version and an Octave version a Python version.

Related Data and Programs:

box_display, a Python code which displays a box plot, over integer pairs of data, of a function defined by two formulas.

is_prime, a Python code which implements various versions of the sieve of Eratosthenes to determine whether a given integer is prime.

prime, a Python code which counts the number of primes between 1 and N, intended as a starting point for the creation of a parallel version.

prime_pi, a Python code which evaluates Pi(n), the number of primes less than or equal to an integer n.

Source Code:

Last revised on 12 January 2023.