Step 1 : Find prime factorization of each number.

$$\begin{aligned}57842515 =& 5\cdot547\cdot21149\\[8pt]928374827 =& 19\cdot48861833\\[8pt]\end{aligned}$$

(view steps on how to factor 57842515 and 928374827. )

Step 2 : Put a box around factors that are common for all numbers:

$$\begin{aligned}57842515 =& 5\cdot547\cdot21149\\[8pt]928374827 =& 19\cdot48861833\\[8pt]\end{aligned}$$

Note that in this example numbers do not have any common factors.

Step 3 : Multiply the boxed numbers together:

Since there is no boxed numbers we conclude that $~\color{blue}{ \text{GCD = 1} } $.

This solution can be visualized using a Venn diagram.

The GCD equals the product of the numbers at the intersection.

GCD Calculator