Big O notation Log Base 2 or Log Base 10 [duplicate]

Answer 1

In Big O notation, O(log(n)) is the same for all bases. This is due to logarithm base conversion:

log2(n) = log10(n)/log10(2)

1/log10(2) is just a constant multiplier factor, so O(log2(n)) is the same as O(log10(n))