A = 100:999;
A = A(isprime(A))';
B = num2str(A);
B = B(:,end:-1:1);
B = str2num(B);
R = sort(B(isprime(B)))'
R =
101 107 113 131 149 151 157 167 179 181 191 199 311 313 337 347 353 359 373 383 389 701 709 727 733 739 743 751 757 761 769 787 797 907 919 929 937 941 953 967 971 983 991