# Your benchmark script
Index 234638, Seconds (reisinge   ): 1.919
Index 234638, Seconds (GrandFather): 0.073
Index 234638, Seconds (biggest_elm): 0.072

# Your benchmark script =~ s/1\.\.4e5/1..4e6/;
Index 3167631, Seconds (reisinge   ): 33.464
Index 3167631, Seconds (GrandFather): 0.876
Index 3167631, Seconds (biggest_elm): 0.775