Find Greatest Common Divisor of 368 and 437, using prime factorization.
Answer
The GCD of given numbers is 23.
Explanation
Step 1 : Find prime factorization of each number.
$$\begin{aligned}368 =& 2\cdot2\cdot2\cdot2\cdot23\\[8pt]437 =& 19\cdot23\\[8pt]\end{aligned}$$(view steps on how to factor 368 and 437. )
Step 2 : Put a box around factors that are common for all numbers:
$$\begin{aligned}368 =& 2\cdot2\cdot2\cdot2\cdot\color{blue}{\boxed{23}}\\[8pt]437 =& 19\cdot\color{blue}{\boxed{23}}\\[8pt]\end{aligned}$$Step 3 : Multiply the boxed numbers together:
$$ GCD = 23 $$This solution can be visualized using a Venn diagram.
The GCD equals the product of the numbers at the intersection.
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