Question

Find the prime factors of $128$.

Answer 1

Solve by prime factorisation:

Given number is $128$

$$\begin{gathered} \begin{array}{cc}2& 128\\ 2& 64\\ 2& 32\\ 2& 16\\ 2& 8\\ 2& 4\\ 2& 2\\ & 1\end{array} \\ \Rightarrow 128=2\times 2\times 2\times 2\times 2\times 2\times 2 \end{gathered}$$

Therefore, the prime factors of $128$ is $2\times 2\times 2\times 2\times 2\times 2\times 2$.