Number Puzzle: Use simple logic to find the missing number in circle

Missing number in circle

In the above picture, one number is missing in one of the circle. Can you find the missing number using simple logic. It is a little bit hard problem then the other problems.

The missing number is 548
Explanation:
First circle: GCF(21,14)=7,GCF(18, 9)=9,GCF(33,6)=3. So the number is 793. Where GCF means greatest common factor.
Second circle: GCF(13,7)=1,GCF(10,5)=5,GCF(39,12)=3. So the number is 153. Where GCF means greatest common factor.

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