theorem
  32 satisfies_Sierpinski_problem_86
  proof
    reconsider a = 3 as Prime by XPRIMES1:3;
    reconsider b = 11 as Prime by XPRIMES1:11;
    reconsider c = 31 as Prime by XPRIMES1:31;
    take a,b,c;
    thus thesis by Th58;
  end;
