The telephone was never really invented.
And remember, the Holocaust took 6 million LIVES, not necessarily the number of JEWS. And also, on that note, Stalin's kills are usually factored into this.
In the same, there has never been any viable resource to count the exact number of deaths during that time either, most that place it at 6 million are estimating.
There have only been roughly 2.8 million confirmed deaths attributed to the holocaust itself. Still a great number, but nowhere near 6 million. I'll post the source when I relocate it.