Thanks Kitonum.

Without your help I would not have found the answer.

Thanks, Georgios!

Thanks a lot, vv 306!

@vv Thanks for your help!

@Carl Love 

Thanks a lot! Now I understand.........

Again, thanks for your help!

Thanks for your post!

I understand that different numbers give different results in time.

The question is: if you look at the factorisation (not how big the number is), why is maple somtimes faster?

When a number has some small factors, the calculation goes faster. I don't understan why.