It is not possible to give a sensible answer to this question. The greatest common factor (GCF) refers to a factor that is COMMON to two or more numbers. You have only one number in the question!
You need at least two numbers to find a GCF.
Two or more numbers are needed to find their GCF
30 is a factor of 150 so 30 is the greatest common factor of 30 and 150
The greatest common factor of 147 and 150 is 3.
The greatest common factor of 140 and 150 is 10.
The greatest common factor of 40 and 150 is 10.
The greatest common factor of 18 and 150 is 6.
The greatest common factor of 4 and 150 is 2
The greatest common factor of 150 , 312 = 6
The greatest common factor of 150 and 350 is 50
The greatest common factor of 100 and 150 is 50.
The Greatest Common Factor of 150, 90, 95 is 5.
The Greatest Common Factor of 75, 115, 150: 5
The Greatest Common Factor (GCF) is: 30