108=2*2*3*3*3
144=2*2*2*2*3*3
405=3*3*3*3*5
3*3=9
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The GCF is 12.
The greatest common factor (GCF) of 108, 72, and 144 is 36. To find the GCF, you need to identify the common factors of the numbers and determine the largest one they all share. In this case, the common factors of 108, 72, and 144 are 1, 2, 3, 4, 6, 9, 12, 18, 36, with 36 being the greatest.
Since 36 is a factor of 144, it is automatically the GCF.
The GCF/HCF of 486 and 405 is 81.
The greatest common factor of 108 and 144 is 36.