How many significant zeros are there in the binary notation of 158?

We translate the number 158 into a binary coding system, that is, divide the number by 2 until we get one:
158: 2 = 79 (0) – no remainder
79: 2 = 39 (1) – with remainder
39: 2 = 19 (1)
19: 2 = 9 (1)
9: 2 = 4 (1)
4: 2 = 2 (0)
2: 2 = 1 (0) write the number from bottom to top, starting with one
158 = 10011110
It turns out that the number 158 in binary notation has 3 significant zeros.