4 log 16log2 16 = 4, since 24 = 2 × 2 × 2 × 2 = 16. · Logarithms can also be negative: log 2 1 2 = − 1 {textstyle log _Here is the answer to questions like: Log base 16 of 4 or what is the base 16 log of 4? Use our | Log16 calculator to find the logarithm of any positive number for any number base you enter.!{frac 55kbet-33.pngHere is the answer to questions like: Log base 16 of 4 or what is the base 16 log of 4? Use our | Log16 calculator to find the logarithm of any positive number for any number base you enter.}=Here is the answer to questions like: Log base 16 of 4 or what is the base 16 log of 4? Use our | Log16 calculator to find the logarithm of any positive number for any number base you enter.