Who will survive?

One hundred people form a big circle.

They stand in a circle in order of one to hundred. The first person (No 1) has a pistol and he is supposed to kill the next person (No 2) and then pass the gun to the next living person (No 3). Each person has to kill the next person and then only pass the gun to next living person. All people in the circle have do the same until only one person survives.

Which person ( No #) will survive in the end?

Photo Adaptation https://pixabay.com/users/openclipart-vectors-30363/