19-Jun-2023 06:50:20 prime_plot_test(): MATLAB/Octave version 5.2.0 Test prime_plot(). PRIME_PLOT Display primes and composite numbers. If N is composite, Box (N,D) is blue if N is divisible by D. If N is prime, Column (N,:) is red. Plot saved in file "prime_plot.png". PRIME_PLOT Normal end of execution. prime_plot_test(): Normal end of execution. 19-Jun-2023 06:57:08